Search ERP Customer or Vendor-MDG

Hi Experts,

On Search ERP Customer or   Search ERP vendor while initial loading the screen I want to default the value with BP ROLE instead of ADDRESS DATA without removing other functionality.

I am able to  set the BP ROLE while initial load  by hard coding the search control value in FILL_METHOD_DROPDOWN of CL_MDG_BS_SEARCH_SWITCH_FEEDER class    but the  functionality missing 

How to achieve this please suggest.

Thanks ,

Rajkumar