GET_MENU_ITEM_PROPERTY returning null

Hi,

I am running the PLSQL below in menu (froms 12c). The buit-in GET_MENU_ITEM_PROPERTY is returning null;

declare

MENU_LABEL VARCHAR2(50)

mi_id MenuItem;

begin

mi_id := Find_Menu_Item( 'GOLD_BAR_SYSTEM_NEW' );

MENU_LABEL := GET_MENU_ITEM_PROPERTY(mi_id,'LABEL');

MESSAGE('MENU_LABEL '|| MENU_LABEL);

END;

Value of MENU_LABEL  is null.

Does GET_MENU_ITEM_PROPERTY works in forms 12c?

Regards,

Dinesh