Formula for Service or Data base name in (Webi Rich client )

Hi Exports:

Iam using s/w  Sap bo 3.1 sp3  .

Query:

         I need formula to find Service  which,  I am using in Bo

          Where as Deskop Intelligence formula is =”source”&<Database Name >

          I need in Rich Client formula .Could u plz help me

Thanks ,

Raghu