Add custom fields to the business partner (UKM_BP) thru BADI

Hi

I want to know how to add Additional business partner attributes(custom fields) to Business partner (Transaction : UKM_BP)

I also added the custom fields to structure UKM_S_BP_CUSTOMER_EXTENSION in the method FILL_FIELDS of BADI UKM_BP_ADD_FIELDS, But nothign is populating on the screen of UKM_BP after activating the below BADI's with SAP provided sample code with above structure.

there are 2 BADI's for this requirements but it doesn't any thing about the screens

UKM_BP_ADD_FIELDS

UKM_EV_FORMULA

Please let me know the detailed steps other than activating these BADI's with sample code by SAP.

Thanks

Govi