diff --git a/assets/js/um-scripts.js b/assets/js/um-scripts.js
index 4cc430e3..a1a99e5d 100644
--- a/assets/js/um-scripts.js
+++ b/assets/js/um-scripts.js
@@ -325,6 +325,7 @@ jQuery(document).ready(function() {
 					url: um_scripts.ajax_select_options,
 					type: 'post',
 					data: {
+						parent_option_name: parent_option,
 						parent_option: parent.val(),
 						child_callback: um_ajax_source,
 						child_name:  me.attr('name'),
diff --git a/includes/core/class-fields.php b/includes/core/class-fields.php
index 05224530..c963e1f6 100644
--- a/includes/core/class-fields.php
+++ b/includes/core/class-fields.php
@@ -675,10 +675,11 @@
 
 				if (in_array( $type, array( 'select', 'multiselect' ) ) && isset( $data['custom_dropdown_options_source'] ) && !empty( $data['custom_dropdown_options_source'] )) {
 
-					if (function_exists( $data['custom_dropdown_options_source'] )) {
-
-						$arr_options = call_user_func( $data['custom_dropdown_options_source'] );
-
+					if ( function_exists( $data['custom_dropdown_options_source'] ) ) {
+						
+             			$arr_options = call_user_func( $data['custom_dropdown_options_source'], $data['parent_dropdown_relationship'] );
+             		    
+						
 						if ($type == 'select') {
 							if (isset( $arr_options[$value] ) && !empty( $arr_options[$value] )) {
 								return $arr_options[$value];
@@ -726,15 +727,10 @@
 			 */
 			function get_options_from_callback( $data, $type ) {
 
+				if ( in_array( $type, array( 'select', 'multiselect' ) ) && isset( $data['custom_dropdown_options_source'] ) && ! empty( $data['custom_dropdown_options_source'] ) ) {
 
-				if (in_array( $type, array( 'select', 'multiselect' ) ) && isset( $data['custom_dropdown_options_source'] ) && !empty( $data['custom_dropdown_options_source'] )) {
-
-					if (function_exists( $data['custom_dropdown_options_source'] )) {
-
-						$arr_options = call_user_func( $data['custom_dropdown_options_source'] );
-
-					}
-
+					$arr_options = call_user_func( $data['custom_dropdown_options_source'], $data['parent_dropdown_relationship'] );
+             		
 
 				}
 
@@ -1869,7 +1865,7 @@
 								$has_parent_option && function_exists( $data['custom_dropdown_options_source'] ) &&
 								um_user( $data['parent_dropdown_relationship'] )
 							) {
-								$options = call_user_func( $data['custom_dropdown_options_source'] );
+								$options = call_user_func( $data['custom_dropdown_options_source'], $data['parent_dropdown_relationship'] );
 								$disabled_by_parent_option = '';
 								if (um_user( $form_key )) {
 									$select_original_option_value = " data-um-original-value='" . um_user( $form_key ) . "' ";
diff --git a/includes/core/class-form.php b/includes/core/class-form.php
index de6ec7b6..4a6dc606 100644
--- a/includes/core/class-form.php
+++ b/includes/core/class-form.php
@@ -71,7 +71,7 @@ if ( ! class_exists( 'Form' ) ) {
 
                     $arr_options['field'] = $form_fields[ $_POST['child_name'] ];
                     if( function_exists( $ajax_source_func ) ){
-                        $arr_options['items'] = call_user_func( $ajax_source_func );
+                        $arr_options['items'] = call_user_func( $ajax_source_func, $arr_options['field']['parent_dropdown_relationship']  );
                     }
 
                 }else{