diff --git a/README.md b/README.md
index 0129c68..9c79bf7 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,13 @@ php examples/create_invoice_example.php "CUSTOM_ID_0"  30000 "payer_email@sample
 php examples/create_invoice_example.php [external_id] [amount] [payer_email] [description]
 ```
 
+# Create Invoice With Callback Virtual Account ID Example : #
+
+```
+cd src/
+php examples/create_invoice_with_callback_virtual_account_id_example.php "CUSTOM_ID_0"  30000 "payer_email@sample.com" "this is a description" "1234567"
+```
+
 # Create Disbursement Example : #
 ```
 cd src/
diff --git a/src/XenditPHPClient.php b/src/XenditPHPClient.php
index 6c2cf18..4db6842 100644
--- a/src/XenditPHPClient.php
+++ b/src/XenditPHPClient.php
@@ -8,7 +8,7 @@ function __construct ($options) {
             $this->secret_api_key = $options['secret_api_key'];
         }
 
-        function createInvoice ($external_id, $amount, $payer_email, $description) {
+        function createInvoice ($external_id, $amount, $payer_email, $description, $invoice_options = null) {
             $curl = curl_init();
 
             $headers = array();
@@ -21,6 +21,10 @@ function createInvoice ($external_id, $amount, $payer_email, $description) {
             $data['payer_email'] = $payer_email;
             $data['description'] = $description;
 
+            if (!empty($invoice_options['callback_virtual_account_id'])) {
+                $data['callback_virtual_account_id'] = $invoice_options['callback_virtual_account_id'];
+            }
+
             $payload = json_encode($data);
 
             curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
diff --git a/src/examples/create_invoice_with_callback_virtual_account_id_example.php b/src/examples/create_invoice_with_callback_virtual_account_id_example.php
new file mode 100644
index 0000000..2ad32b2
--- /dev/null
+++ b/src/examples/create_invoice_with_callback_virtual_account_id_example.php
@@ -0,0 +1,17 @@
+<?php
+    require('config/xendit_php_client_config.php');
+    require('XenditPHPClient.php');
+    
+    $options['secret_api_key'] = constant('SECRET_API_KEY');
+
+    $xenditPHPClient = new XenditClient\XenditPHPClient($options);
+
+    $external_id = $argv[1];
+    $amount = $argv[2];
+    $payer_email = $argv[3];
+    $description = $argv[4];
+    $options['callback_virtual_account_id'] = $argv[5];
+
+    $response = $xenditPHPClient->createInvoice($external_id, $amount, $payer_email, $description, $options);
+    print_r($response);
+?>