diff --git a/gradle.properties b/gradle.properties
index a86f38a..ed91fb2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
-version = 2.0.2
+version = 2.0.3
 group = com.cabolabs
\ No newline at end of file
diff --git a/opt.bat b/opt.bat
index 476b8b3..eb450a0 100644
--- a/opt.bat
+++ b/opt.bat
@@ -1 +1 @@
-java -cp "./lib/*;%GROOVY_HOME%/embeddable/groovy-all-2.4.7.jar;build/libs/opt-2.0.2.jar" com.cabolabs.openehr.opt.Main %1 %2 %3 %4 %5 %6 %7
\ No newline at end of file
+java -cp "./lib/*;%GROOVY_HOME%/embeddable/groovy-all-2.4.7.jar;build/libs/opt-2.0.3.jar" com.cabolabs.openehr.opt.Main %1 %2 %3 %4 %5 %6 %7
\ No newline at end of file
diff --git a/opt.sh b/opt.sh
index 069ab7c..27a4f5e 100755
--- a/opt.sh
+++ b/opt.sh
@@ -1 +1 @@
-java -cp "./lib/*:$GROOVY_HOME/lib/*:build/libs/opt-2.0.2.jar" com.cabolabs.openehr.opt.Main $1 $2 $3 $4 $5 $6 $7
+java -cp "./lib/*:$GROOVY_HOME/lib/*:build/libs/opt-2.0.3.jar" com.cabolabs.openehr.opt.Main $1 $2 $3 $4 $5 $6 $7
diff --git a/src/main/groovy/com/cabolabs/openehr/opt/instance_generator/RmInstanceGenerator.groovy b/src/main/groovy/com/cabolabs/openehr/opt/instance_generator/RmInstanceGenerator.groovy
index 598a6ab..21c4917 100644
--- a/src/main/groovy/com/cabolabs/openehr/opt/instance_generator/RmInstanceGenerator.groovy
+++ b/src/main/groovy/com/cabolabs/openehr/opt/instance_generator/RmInstanceGenerator.groovy
@@ -2265,8 +2265,8 @@ class RmInstanceGenerator {
 
       add_LOCATABLE_elements(o, ev, parent_arch_id)
 
-      ev.time = generate_DV_DATE_TIME(null, null)
       // IM attribute not present in the OPT
+      ev.time = generate_DV_DATE_TIME(null, null)
 
       def process_attrs = [
          'data',
@@ -2306,7 +2306,7 @@ class RmInstanceGenerator {
 
       def process_attrs = [
          'data',
-         'state'
+         'state' // NOTE: this is optional!
       ]
 
       def oa, mattrs
@@ -2314,13 +2314,16 @@ class RmInstanceGenerator {
 
          oa = o.attributes.find { it.rmAttributeName == attr_name }
 
-         // in event there are no lists, so the results will be lists of 1 item
+         // in event there are no lists, so the result will be a list of 1 item
          mattrs = processAttributeChildren(oa, parent_arch_id)
 
-         ev."${oa.rmAttributeName}" = mattrs[0]
+         if (mattrs)
+         {
+            ev."${oa.rmAttributeName}" = mattrs[0]
+         }
       }
 
-      // TODO: if there is no attribute contraint, the duration generation wont work so we should check that here
+      // required attribute
       oa = o.attributes.find { it.rmAttributeName == 'width' }
       if (oa)
       {
@@ -2335,6 +2338,7 @@ class RmInstanceGenerator {
          )
       }
 
+      // required attribute
       oa = o.attributes.find { it.rmAttributeName == 'math_function' }
       if (oa)
       {
@@ -2355,6 +2359,8 @@ class RmInstanceGenerator {
          )
       }
 
+      // TODO: if a constraint for sample_count is included, generate a value for it.
+
       return ev
    }
 
diff --git a/src/test/resources/Resultados_de_laboratorio.opt b/src/test/resources/Resultados_de_laboratorio.opt
new file mode 100644
index 0000000..b8d9c55
--- /dev/null
+++ b/src/test/resources/Resultados_de_laboratorio.opt
@@ -0,0 +1,676 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--Operational template XML automatically generated by Ocean Template Designer Version 2.8.94Beta-->
+<template xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.openehr.org/v1">
+  <language>
+    <terminology_id>
+      <value>ISO_639-1</value>
+    </terminology_id>
+    <code_string>es</code_string>
+  </language>
+  <description>
+    <original_author id="Original Author">Not Specified</original_author>
+    <lifecycle_state>Initial</lifecycle_state>
+    <other_details id="MetaDataSet:Sample Set ">Template metadata sample set </other_details>
+    <other_details id="Acknowledgements"></other_details>
+    <other_details id="Business Process Level"></other_details>
+    <other_details id="Care setting"></other_details>
+    <other_details id="Client group"></other_details>
+    <other_details id="Clinical Record Element"></other_details>
+    <other_details id="Copyright"></other_details>
+    <other_details id="Issues"></other_details>
+    <other_details id="Owner"></other_details>
+    <other_details id="Sign off"></other_details>
+    <other_details id="Speciality"></other_details>
+    <other_details id="User roles"></other_details>
+    <details>
+      <language>
+        <terminology_id>
+          <value>ISO_639-1</value>
+        </terminology_id>
+        <code_string>es</code_string>
+      </language>
+      <purpose>Not Specified</purpose>
+    </details>
+  </description>
+  <uid>
+    <value>2054bff8-2ade-4db1-804b-ce0590d27231</value>
+  </uid>
+  <template_id>
+    <value>Resultados de laboratorio</value>
+  </template_id>
+  <concept>Resultados de laboratorio</concept>
+  <definition>
+    <rm_type_name>COMPOSITION</rm_type_name>
+    <occurrences>
+      <lower_included>true</lower_included>
+      <upper_included>true</upper_included>
+      <lower_unbounded>false</lower_unbounded>
+      <upper_unbounded>false</upper_unbounded>
+      <lower>1</lower>
+      <upper>1</upper>
+    </occurrences>
+    <node_id>at0000</node_id>
+    <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+      <rm_attribute_name>category</rm_attribute_name>
+      <existence>
+        <lower_included>true</lower_included>
+        <upper_included>true</upper_included>
+        <lower_unbounded>false</lower_unbounded>
+        <upper_unbounded>false</upper_unbounded>
+        <lower>1</lower>
+        <upper>1</upper>
+      </existence>
+      <children xsi:type="C_COMPLEX_OBJECT">
+        <rm_type_name>DV_CODED_TEXT</rm_type_name>
+        <occurrences>
+          <lower_included>true</lower_included>
+          <upper_included>true</upper_included>
+          <lower_unbounded>false</lower_unbounded>
+          <upper_unbounded>false</upper_unbounded>
+          <lower>1</lower>
+          <upper>1</upper>
+        </occurrences>
+        <node_id />
+        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+          <rm_attribute_name>defining_code</rm_attribute_name>
+          <existence>
+            <lower_included>true</lower_included>
+            <upper_included>true</upper_included>
+            <lower_unbounded>false</lower_unbounded>
+            <upper_unbounded>false</upper_unbounded>
+            <lower>1</lower>
+            <upper>1</upper>
+          </existence>
+          <children xsi:type="C_CODE_PHRASE">
+            <rm_type_name>CODE_PHRASE</rm_type_name>
+            <occurrences>
+              <lower_included>true</lower_included>
+              <upper_included>true</upper_included>
+              <lower_unbounded>false</lower_unbounded>
+              <upper_unbounded>false</upper_unbounded>
+              <lower>1</lower>
+              <upper>1</upper>
+            </occurrences>
+            <node_id />
+            <terminology_id>
+              <value>openehr</value>
+            </terminology_id>
+            <code_list>433</code_list>
+          </children>
+        </attributes>
+      </children>
+    </attributes>
+    <attributes xsi:type="C_MULTIPLE_ATTRIBUTE">
+      <rm_attribute_name>content</rm_attribute_name>
+      <existence>
+        <lower_included>true</lower_included>
+        <upper_included>true</upper_included>
+        <lower_unbounded>false</lower_unbounded>
+        <upper_unbounded>false</upper_unbounded>
+        <lower>0</lower>
+        <upper>1</upper>
+      </existence>
+      <children xsi:type="C_ARCHETYPE_ROOT">
+        <rm_type_name>OBSERVATION</rm_type_name>
+        <occurrences>
+          <lower_included>true</lower_included>
+          <lower_unbounded>false</lower_unbounded>
+          <upper_unbounded>true</upper_unbounded>
+          <lower>0</lower>
+        </occurrences>
+        <node_id>at0000</node_id>
+        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+          <rm_attribute_name>data</rm_attribute_name>
+          <existence>
+            <lower_included>true</lower_included>
+            <upper_included>true</upper_included>
+            <lower_unbounded>false</lower_unbounded>
+            <upper_unbounded>false</upper_unbounded>
+            <lower>1</lower>
+            <upper>1</upper>
+          </existence>
+          <children xsi:type="C_COMPLEX_OBJECT">
+            <rm_type_name>HISTORY</rm_type_name>
+            <occurrences>
+              <lower_included>true</lower_included>
+              <upper_included>true</upper_included>
+              <lower_unbounded>false</lower_unbounded>
+              <upper_unbounded>false</upper_unbounded>
+              <lower>1</lower>
+              <upper>1</upper>
+            </occurrences>
+            <node_id>at0001</node_id>
+            <attributes xsi:type="C_MULTIPLE_ATTRIBUTE">
+              <rm_attribute_name>events</rm_attribute_name>
+              <existence>
+                <lower_included>true</lower_included>
+                <upper_included>true</upper_included>
+                <lower_unbounded>false</lower_unbounded>
+                <upper_unbounded>false</upper_unbounded>
+                <lower>0</lower>
+                <upper>1</upper>
+              </existence>
+              <children xsi:type="C_COMPLEX_OBJECT">
+                <rm_type_name>INTERVAL_EVENT</rm_type_name>
+                <occurrences>
+                  <lower_included>true</lower_included>
+                  <upper_included>true</upper_included>
+                  <lower_unbounded>false</lower_unbounded>
+                  <upper_unbounded>false</upper_unbounded>
+                  <lower>0</lower>
+                  <upper>1</upper>
+                </occurrences>
+                <node_id>at0002</node_id>
+                <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                  <rm_attribute_name>data</rm_attribute_name>
+                  <existence>
+                    <lower_included>true</lower_included>
+                    <upper_included>true</upper_included>
+                    <lower_unbounded>false</lower_unbounded>
+                    <upper_unbounded>false</upper_unbounded>
+                    <lower>1</lower>
+                    <upper>1</upper>
+                  </existence>
+                  <children xsi:type="C_COMPLEX_OBJECT">
+                    <rm_type_name>ITEM_TREE</rm_type_name>
+                    <occurrences>
+                      <lower_included>true</lower_included>
+                      <upper_included>true</upper_included>
+                      <lower_unbounded>false</lower_unbounded>
+                      <upper_unbounded>false</upper_unbounded>
+                      <lower>1</lower>
+                      <upper>1</upper>
+                    </occurrences>
+                    <node_id>at0003</node_id>
+                    <attributes xsi:type="C_MULTIPLE_ATTRIBUTE">
+                      <rm_attribute_name>items</rm_attribute_name>
+                      <existence>
+                        <lower_included>true</lower_included>
+                        <upper_included>true</upper_included>
+                        <lower_unbounded>false</lower_unbounded>
+                        <upper_unbounded>false</upper_unbounded>
+                        <lower>0</lower>
+                        <upper>1</upper>
+                      </existence>
+                      <children xsi:type="C_COMPLEX_OBJECT">
+                        <rm_type_name>ELEMENT</rm_type_name>
+                        <occurrences>
+                          <lower_included>true</lower_included>
+                          <upper_included>true</upper_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>false</upper_unbounded>
+                          <lower>1</lower>
+                          <upper>1</upper>
+                        </occurrences>
+                        <node_id>at0004</node_id>
+                        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                          <rm_attribute_name>value</rm_attribute_name>
+                          <existence>
+                            <lower_included>true</lower_included>
+                            <upper_included>true</upper_included>
+                            <lower_unbounded>false</lower_unbounded>
+                            <upper_unbounded>false</upper_unbounded>
+                            <lower>0</lower>
+                            <upper>1</upper>
+                          </existence>
+                          <children xsi:type="C_DV_QUANTITY">
+                            <rm_type_name>DV_QUANTITY</rm_type_name>
+                            <occurrences>
+                              <lower_included>true</lower_included>
+                              <upper_included>true</upper_included>
+                              <lower_unbounded>false</lower_unbounded>
+                              <upper_unbounded>false</upper_unbounded>
+                              <lower>1</lower>
+                              <upper>1</upper>
+                            </occurrences>
+                            <node_id />
+                            <property>
+                              <terminology_id>
+                                <value>openehr</value>
+                              </terminology_id>
+                              <code_string>119</code_string>
+                            </property>
+                            <list>
+                              <magnitude>
+                                <lower_included>true</lower_included>
+                                <upper_included>true</upper_included>
+                                <lower_unbounded>false</lower_unbounded>
+                                <upper_unbounded>false</upper_unbounded>
+                                <lower>0</lower>
+                                <upper>10</upper>
+                              </magnitude>
+                              <units>mg/dl</units>
+                            </list>
+                            <list>
+                              <magnitude>
+                                <lower_included>true</lower_included>
+                                <upper_included>true</upper_included>
+                                <lower_unbounded>false</lower_unbounded>
+                                <upper_unbounded>false</upper_unbounded>
+                                <lower>0</lower>
+                                <upper>110</upper>
+                              </magnitude>
+                              <units>mmol/l</units>
+                            </list>
+                          </children>
+                        </attributes>
+                      </children>
+                      <children xsi:type="C_COMPLEX_OBJECT">
+                        <rm_type_name>ELEMENT</rm_type_name>
+                        <occurrences>
+                          <lower_included>true</lower_included>
+                          <upper_included>true</upper_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>false</upper_unbounded>
+                          <lower>1</lower>
+                          <upper>1</upper>
+                        </occurrences>
+                        <node_id>at0005</node_id>
+                        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                          <rm_attribute_name>value</rm_attribute_name>
+                          <existence>
+                            <lower_included>true</lower_included>
+                            <upper_included>true</upper_included>
+                            <lower_unbounded>false</lower_unbounded>
+                            <upper_unbounded>false</upper_unbounded>
+                            <lower>0</lower>
+                            <upper>1</upper>
+                          </existence>
+                          <children xsi:type="C_DV_QUANTITY">
+                            <rm_type_name>DV_QUANTITY</rm_type_name>
+                            <occurrences>
+                              <lower_included>true</lower_included>
+                              <upper_included>true</upper_included>
+                              <lower_unbounded>false</lower_unbounded>
+                              <upper_unbounded>false</upper_unbounded>
+                              <lower>1</lower>
+                              <upper>1</upper>
+                            </occurrences>
+                            <node_id />
+                            <property>
+                              <terminology_id>
+                                <value>openehr</value>
+                              </terminology_id>
+                              <code_string>119</code_string>
+                            </property>
+                            <list>
+                              <units>mg/dl</units>
+                            </list>
+                            <list>
+                              <units>mmol/l</units>
+                            </list>
+                          </children>
+                        </attributes>
+                      </children>
+                      <children xsi:type="C_COMPLEX_OBJECT">
+                        <rm_type_name>ELEMENT</rm_type_name>
+                        <occurrences>
+                          <lower_included>true</lower_included>
+                          <upper_included>true</upper_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>false</upper_unbounded>
+                          <lower>1</lower>
+                          <upper>1</upper>
+                        </occurrences>
+                        <node_id>at0006</node_id>
+                        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                          <rm_attribute_name>value</rm_attribute_name>
+                          <existence>
+                            <lower_included>true</lower_included>
+                            <upper_included>true</upper_included>
+                            <lower_unbounded>false</lower_unbounded>
+                            <upper_unbounded>false</upper_unbounded>
+                            <lower>0</lower>
+                            <upper>1</upper>
+                          </existence>
+                          <children xsi:type="C_DV_QUANTITY">
+                            <rm_type_name>DV_QUANTITY</rm_type_name>
+                            <occurrences>
+                              <lower_included>true</lower_included>
+                              <upper_included>true</upper_included>
+                              <lower_unbounded>false</lower_unbounded>
+                              <upper_unbounded>false</upper_unbounded>
+                              <lower>1</lower>
+                              <upper>1</upper>
+                            </occurrences>
+                            <node_id />
+                            <property>
+                              <terminology_id>
+                                <value>openehr</value>
+                              </terminology_id>
+                              <code_string>119</code_string>
+                            </property>
+                            <list>
+                              <units>mg/dl</units>
+                            </list>
+                            <list>
+                              <units>mmol/l</units>
+                            </list>
+                          </children>
+                        </attributes>
+                      </children>
+                      <children xsi:type="C_COMPLEX_OBJECT">
+                        <rm_type_name>ELEMENT</rm_type_name>
+                        <occurrences>
+                          <lower_included>true</lower_included>
+                          <upper_included>true</upper_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>false</upper_unbounded>
+                          <lower>1</lower>
+                          <upper>1</upper>
+                        </occurrences>
+                        <node_id>at0007</node_id>
+                        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                          <rm_attribute_name>value</rm_attribute_name>
+                          <existence>
+                            <lower_included>true</lower_included>
+                            <upper_included>true</upper_included>
+                            <lower_unbounded>false</lower_unbounded>
+                            <upper_unbounded>false</upper_unbounded>
+                            <lower>0</lower>
+                            <upper>1</upper>
+                          </existence>
+                          <children xsi:type="C_DV_QUANTITY">
+                            <rm_type_name>DV_QUANTITY</rm_type_name>
+                            <occurrences>
+                              <lower_included>true</lower_included>
+                              <upper_included>true</upper_included>
+                              <lower_unbounded>false</lower_unbounded>
+                              <upper_unbounded>false</upper_unbounded>
+                              <lower>1</lower>
+                              <upper>1</upper>
+                            </occurrences>
+                            <node_id />
+                            <property>
+                              <terminology_id>
+                                <value>openehr</value>
+                              </terminology_id>
+                              <code_string>119</code_string>
+                            </property>
+                            <list>
+                              <units>mg/dl</units>
+                            </list>
+                            <list>
+                              <units>mmol/l</units>
+                            </list>
+                          </children>
+                        </attributes>
+                      </children>
+                      <children xsi:type="ARCHETYPE_SLOT">
+                        <rm_type_name>CLUSTER</rm_type_name>
+                        <occurrences>
+                          <lower_included>true</lower_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>true</upper_unbounded>
+                          <lower>0</lower>
+                        </occurrences>
+                        <node_id>at0009</node_id>
+                        <includes>
+                          <expression xsi:type="EXPR_BINARY_OPERATOR">
+                            <type>Boolean</type>
+                            <operator>2007</operator>
+                            <precedence_overridden>false</precedence_overridden>
+                            <left_operand xsi:type="EXPR_LEAF">
+                              <type>String</type>
+                              <item xsi:type="xsd:string">archetype_id/value</item>
+                              <reference_type>attribute</reference_type>
+                            </left_operand>
+                            <right_operand xsi:type="EXPR_LEAF">
+                              <type>C_STRING</type>
+                              <item xsi:type="C_STRING">
+                                <pattern>.*</pattern>
+                              </item>
+                              <reference_type>constraint</reference_type>
+                            </right_operand>
+                          </expression>
+                        </includes>
+                      </children>
+                      <cardinality>
+                        <is_ordered>false</is_ordered>
+                        <is_unique>false</is_unique>
+                        <interval>
+                          <lower_included>true</lower_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>true</upper_unbounded>
+                          <lower>4</lower>
+                        </interval>
+                      </cardinality>
+                    </attributes>
+                  </children>
+                </attributes>
+              </children>
+              <cardinality>
+                <is_ordered>false</is_ordered>
+                <is_unique>false</is_unique>
+                <interval>
+                  <lower_included>true</lower_included>
+                  <lower_unbounded>false</lower_unbounded>
+                  <upper_unbounded>true</upper_unbounded>
+                  <lower>1</lower>
+                </interval>
+              </cardinality>
+            </attributes>
+          </children>
+        </attributes>
+        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+          <rm_attribute_name>state</rm_attribute_name>
+          <existence>
+            <lower_included>true</lower_included>
+            <upper_included>true</upper_included>
+            <lower_unbounded>false</lower_unbounded>
+            <upper_unbounded>false</upper_unbounded>
+            <lower>0</lower>
+            <upper>1</upper>
+          </existence>
+          <children xsi:type="C_COMPLEX_OBJECT">
+            <rm_type_name>HISTORY</rm_type_name>
+            <occurrences>
+              <lower_included>true</lower_included>
+              <upper_included>true</upper_included>
+              <lower_unbounded>false</lower_unbounded>
+              <upper_unbounded>false</upper_unbounded>
+              <lower>1</lower>
+              <upper>1</upper>
+            </occurrences>
+            <node_id>at0013</node_id>
+            <attributes xsi:type="C_MULTIPLE_ATTRIBUTE">
+              <rm_attribute_name>events</rm_attribute_name>
+              <existence>
+                <lower_included>true</lower_included>
+                <upper_included>true</upper_included>
+                <lower_unbounded>false</lower_unbounded>
+                <upper_unbounded>false</upper_unbounded>
+                <lower>0</lower>
+                <upper>1</upper>
+              </existence>
+              <children xsi:type="C_COMPLEX_OBJECT">
+                <rm_type_name>EVENT</rm_type_name>
+                <occurrences>
+                  <lower_included>true</lower_included>
+                  <upper_included>true</upper_included>
+                  <lower_unbounded>false</lower_unbounded>
+                  <upper_unbounded>false</upper_unbounded>
+                  <lower>0</lower>
+                  <upper>1</upper>
+                </occurrences>
+                <node_id>at0014</node_id>
+                <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                  <rm_attribute_name>data</rm_attribute_name>
+                  <existence>
+                    <lower_included>true</lower_included>
+                    <upper_included>true</upper_included>
+                    <lower_unbounded>false</lower_unbounded>
+                    <upper_unbounded>false</upper_unbounded>
+                    <lower>1</lower>
+                    <upper>1</upper>
+                  </existence>
+                  <children xsi:type="C_COMPLEX_OBJECT">
+                    <rm_type_name>ITEM_TREE</rm_type_name>
+                    <occurrences>
+                      <lower_included>true</lower_included>
+                      <upper_included>true</upper_included>
+                      <lower_unbounded>false</lower_unbounded>
+                      <upper_unbounded>false</upper_unbounded>
+                      <lower>1</lower>
+                      <upper>1</upper>
+                    </occurrences>
+                    <node_id>at0012</node_id>
+                    <attributes xsi:type="C_MULTIPLE_ATTRIBUTE">
+                      <rm_attribute_name>items</rm_attribute_name>
+                      <existence>
+                        <lower_included>true</lower_included>
+                        <upper_included>true</upper_included>
+                        <lower_unbounded>false</lower_unbounded>
+                        <upper_unbounded>false</upper_unbounded>
+                        <lower>0</lower>
+                        <upper>1</upper>
+                      </existence>
+                      <children xsi:type="C_COMPLEX_OBJECT">
+                        <rm_type_name>ELEMENT</rm_type_name>
+                        <occurrences>
+                          <lower_included>true</lower_included>
+                          <upper_included>true</upper_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>false</upper_unbounded>
+                          <lower>0</lower>
+                          <upper>1</upper>
+                        </occurrences>
+                        <node_id>at0015</node_id>
+                        <attributes xsi:type="C_SINGLE_ATTRIBUTE">
+                          <rm_attribute_name>value</rm_attribute_name>
+                          <existence>
+                            <lower_included>true</lower_included>
+                            <upper_included>true</upper_included>
+                            <lower_unbounded>false</lower_unbounded>
+                            <upper_unbounded>false</upper_unbounded>
+                            <lower>0</lower>
+                            <upper>1</upper>
+                          </existence>
+                          <children xsi:type="C_COMPLEX_OBJECT">
+                            <rm_type_name>DV_TEXT</rm_type_name>
+                            <occurrences>
+                              <lower_included>true</lower_included>
+                              <upper_included>true</upper_included>
+                              <lower_unbounded>false</lower_unbounded>
+                              <upper_unbounded>false</upper_unbounded>
+                              <lower>1</lower>
+                              <upper>1</upper>
+                            </occurrences>
+                            <node_id />
+                          </children>
+                        </attributes>
+                      </children>
+                      <cardinality>
+                        <is_ordered>false</is_ordered>
+                        <is_unique>false</is_unique>
+                        <interval>
+                          <lower_included>true</lower_included>
+                          <lower_unbounded>false</lower_unbounded>
+                          <upper_unbounded>true</upper_unbounded>
+                          <lower>0</lower>
+                        </interval>
+                      </cardinality>
+                    </attributes>
+                  </children>
+                </attributes>
+              </children>
+              <cardinality>
+                <is_ordered>false</is_ordered>
+                <is_unique>false</is_unique>
+                <interval>
+                  <lower_included>true</lower_included>
+                  <lower_unbounded>false</lower_unbounded>
+                  <upper_unbounded>true</upper_unbounded>
+                  <lower>1</lower>
+                </interval>
+              </cardinality>
+            </attributes>
+          </children>
+        </attributes>
+        <archetype_id>
+          <value>openEHR-EHR-OBSERVATION.perfil_lipidico.v1</value>
+        </archetype_id>
+        <term_definitions code="at0000">
+          <items id="description">unknown</items>
+          <items id="text">Perfil lipidico</items>
+        </term_definitions>
+        <term_definitions code="at0001">
+          <items id="description">@ internal @</items>
+          <items id="text">Event Series</items>
+        </term_definitions>
+        <term_definitions code="at0002">
+          <items id="description">*</items>
+          <items id="text">Cualquier evento</items>
+        </term_definitions>
+        <term_definitions code="at0003">
+          <items id="description">@ internal @</items>
+          <items id="text">Arbol</items>
+        </term_definitions>
+        <term_definitions code="at0004">
+          <items id="description">*</items>
+          <items id="text">Trigliceridos</items>
+        </term_definitions>
+        <term_definitions code="at0005">
+          <items id="description">*</items>
+          <items id="text">Colesterol HDL</items>
+        </term_definitions>
+        <term_definitions code="at0006">
+          <items id="description">*</items>
+          <items id="text">Colesterol LDL</items>
+        </term_definitions>
+        <term_definitions code="at0007">
+          <items id="description">*</items>
+          <items id="text">Colesterol Total</items>
+        </term_definitions>
+        <term_definitions code="at0008">
+          <items id="description">*</items>
+          <items id="text">Comentario</items>
+        </term_definitions>
+        <term_definitions code="at0009">
+          <items id="description">*</items>
+          <items id="text">Extension</items>
+        </term_definitions>
+        <term_definitions code="at0012">
+          <items id="description">@ internal @</items>
+          <items id="text">Arbol</items>
+        </term_definitions>
+        <term_definitions code="at0013">
+          <items id="description">@ internal @</items>
+          <items id="text">State Event Series</items>
+        </term_definitions>
+        <term_definitions code="at0014">
+          <items id="description">*</items>
+          <items id="text">Cualquier evento</items>
+        </term_definitions>
+        <term_definitions code="at0015">
+          <items id="description">*</items>
+          <items id="text">Etado de conciencia</items>
+        </term_definitions>
+      </children>
+      <cardinality>
+        <is_ordered>false</is_ordered>
+        <is_unique>false</is_unique>
+        <interval>
+          <lower_included>true</lower_included>
+          <lower_unbounded>false</lower_unbounded>
+          <upper_unbounded>true</upper_unbounded>
+          <lower>0</lower>
+        </interval>
+      </cardinality>
+    </attributes>
+    <archetype_id>
+      <value>openEHR-EHR-COMPOSITION.resultados_de_laboratorio.v1</value>
+    </archetype_id>
+    <template_id>
+      <value>Resultados de laboratorio</value>
+    </template_id>
+    <term_definitions code="at0000">
+      <items id="description">unknown</items>
+      <items id="text">Resultados de laboratorio</items>
+    </term_definitions>
+    <term_definitions code="at0001">
+      <items id="description">*</items>
+      <items id="text">Perfil Lipidico</items>
+    </term_definitions>
+  </definition>
+</template>
\ No newline at end of file