Adding Delivery Address Option to Inquiry Screen

I am working on a project to modify the sales order line inquiry to include the option of selecting an address to search on.  I understand that I need to do some code modifications to get the filtering to work correctly but I haven't gotten that far yet.  I have added the Ship To Address to the header screen and validated.  The field type is set to BPD and the parameter for that type has been set to [M:CSP1]BPCORD but it doesn't pull the customer addresses.  What am I missing?

Regards,