$relType = CRM_Utils_Request::retrieve('rel_type', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$relContactID = CRM_Utils_Request::retrieve('rel_contact', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$relationshipID = CRM_Utils_Array::value('rel_id', $_REQUEST); // this used only to determine add or update mode
$relType = CRM_Utils_Request::retrieve('rel_type', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$relContactID = CRM_Utils_Request::retrieve('rel_contact', 'Positive', CRM_Core_DAO::$_nullObject, TRUE);
$relationshipID = CRM_Utils_Array::value('rel_id', $_REQUEST); // this used only to determine add or update mode