diff --git a/src/ansys/aedt/core/modules/boundary/layout_boundary.py b/src/ansys/aedt/core/modules/boundary/layout_boundary.py
index e539655934d..fe855892fa4 100644
--- a/src/ansys/aedt/core/modules/boundary/layout_boundary.py
+++ b/src/ansys/aedt/core/modules/boundary/layout_boundary.py
@@ -118,7 +118,9 @@ def _child_object(self):
 
         """
         child_object = None
-        for el in self._app.oeditor.GetChildNames("ComponentDefinition"):
+        component_definition = self._app.oeditor.Get3DComponentDefinitionNames()
+
+        for el in component_definition:
             design_childs = self._app.get_oo_object(self._app.oeditor, el).GetChildNames()
             if self._name in design_childs:
                 child_object = self._app.get_oo_object(self._app.oeditor, f"{el}\\{self._name}")
diff --git a/src/ansys/aedt/core/modules/mesh_icepak.py b/src/ansys/aedt/core/modules/mesh_icepak.py
index 395e8bb8637..3b688f41152 100644
--- a/src/ansys/aedt/core/modules/mesh_icepak.py
+++ b/src/ansys/aedt/core/modules/mesh_icepak.py
@@ -933,12 +933,12 @@ def assignment(self):
                     for sr in sub_regions:
                         p1 = []
                         p2 = []
-                        if "Part Names" in self._app.modeler[sr].history().props:
-                            p1 = self._app.modeler[sr].history().props.get("Part Names", None)
+                        if "Part Names" in self._app.modeler[sr].history().properties:
+                            p1 = self._app.modeler[sr].history().properties.get("Part Names", None)
                             if not isinstance(p1, list):
                                 p1 = [p1]
-                        elif "Submodel Names" in self._app.modeler[sr].history().props:
-                            p2 = self._app.modeler[sr].history().props.get("Submodel Names", None)
+                        elif "Submodel Names" in self._app.modeler[sr].history().properties:
+                            p2 = self._app.modeler[sr].history().properties.get("Submodel Names", None)
                             if not isinstance(p2, list):
                                 p2 = [p2]
                         p1 += p2