Change selection screen field description for field Customer KUNNR & HIENR of report V/LD

Hi Experts,

I want to change the selection screen field description of field customer KUNNR & HIENR in the report transaction V/LD pricing report and also want to add fields in the report output. but i dont see any customer exit or badi for this change. so could you please help suggest?

Thanks in Advance

Dipak.