F4 BP Search Helper - Transfer ID to Form

Hello,

I have added a custom field to the Opportunity Product that leverages an F4 search helper. My GET_V_ method simply calls through to my Outbound Plug called OP_SEARCHPARTNER, which simply calls through to the out-of-box cl_crm_uiu_bt_partner_popup=>bp_search_do.

The good news is that my custom field is appearing on the Product, and the F4 BP Search Helper pop-up renders perfectly, and I can search for BP's.

The bad news is that when I select a BP, the BP ID is not transferred back to the Form.

Can anyone provide some pointers for transferring the BP ID from Search Helper back to my custom field on the form?

Or maybe I'm taking the wrong approach with an Outbound Plug calling through to cl_crm_uiu_bt_partner_popup=>bp_search_do?

Thanks!