I got a form called frm_deleteFinishGoodsInventory which contains a combo box that has a afterupdate. This event works perfectly fine in a stand alone form.

When it comes to putting this form on a navigation control, I can't seem to reference the cbolotNo.
Example of a 2 layer menu navigation control

As you can see, I am in the menu Shipping (1st layer) + Delete Carton From FGI (2nd layer) -> targeting the frm_deleteFinishGoodsInventory.
I have tried multiple things, but I always end up with the same error or the program crashing since I can't reference the object.
frm_NavMenu = main navigation form
NavigationButton26 = 1st menu layer ( Shipping )
NavigationButton819 = 2nd menu layer ( Delete Carton From FGI )
