How To - ChooseFromList - Business Partner Contacts

Hi,

Does anyone know how to define/create a ChooseFromList (in XML or via code) with BP contacts that can have conditions to filter out the list based on CardCode? I have looked through the BoLinkedObject list and don't see contacts in there. I have also troed to set the ObjectType to "OCPR" but SAP raises an Invalid ObjectType error.

Any ideas?

Thanks,

David