diff --git a/workflow/engine/src/Services/Api/ProcessMaker/Project/Activity.php b/workflow/engine/src/Services/Api/ProcessMaker/Project/Activity.php
index 9637808ab..a8d640980 100644
--- a/workflow/engine/src/Services/Api/ProcessMaker/Project/Activity.php
+++ b/workflow/engine/src/Services/Api/ProcessMaker/Project/Activity.php
@@ -17,7 +17,14 @@ class Activity extends Api
     public function doGetProjectActivity($projectUid, $activityUid, $filter = '')
     {
         try {
-            $hiddenFields = array('pro_uid', 'tas_uid', 'tas_delay_type', 'tas_temporizer', 'tas_alert', 'tas_mi_instance_variable', 'tas_mi_complete_variable', 'tas_assign_location', 'tas_assign_location_adhoc', 'tas_last_assigned', 'tas_user', 'tas_can_upload', 'tas_view_upload', 'tas_view_additional_documentation', 'tas_can_cancel', 'tas_owner_app', 'tas_can_pause', 'tas_can_send_message', 'tas_can_delete_docs', 'tas_self_service', 'tas_to_last_user', 'tas_derivation', 'tas_posx', 'tas_posy', 'tas_width', 'tas_height', 'tas_color', 'tas_evn_uid', 'tas_boundary', 'tas_def_proc_code', 'stg_uid');
+            $hiddenFields = array('pro_uid', 'tas_uid', 'tas_delay_type', 'tas_temporizer', 'tas_alert',
+                'tas_mi_instance_variable', 'tas_mi_complete_variable', 'tas_assign_location',
+                'tas_assign_location_adhoc', 'tas_last_assigned', 'tas_user', 'tas_can_upload', 'tas_view_upload',
+                'tas_view_additional_documentation', 'tas_can_cancel', 'tas_owner_app', 'tas_can_pause',
+                'tas_can_send_message', 'tas_can_delete_docs', 'tas_self_service', 'tas_to_last_user',
+                'tas_derivation', 'tas_posx', 'tas_posy', 'tas_width', 'tas_height', 'tas_color', 'tas_evn_uid',
+                'tas_boundary', 'tas_def_proc_code', 'stg_uid'
+            );
             $definition = array();
             $properties = array();