PO Form Personalization

I am attempting to add a personalization to the PO form.  I actually have it working properly when the PO is created MANUALLY.  My issue is that the users want to create POs directly from requisitions using AutoCreate and my personalization is not working because it's depending on :PO_DISTRIBUTION.DELIVER_TO_PERSON(_ID) being populated (using it in the Value Property of the Action) and it's not when AutoCreate is used.  Can someone help me determine how to set up my personalization so that it triggers and populates during the PO AutoCreate process?  Thanks.