Can i use the Coustomer Exit variable Bo-webi report

Hi All,

         I have created the report on the Bex  Query.

Bex query  consists of a customer exit variable on current system date  Calendar year/month where in it will populate current calendar year month by default while executing the query. It works fine while executing in SAP BI Bex Analyzer.

How can i use that customer exit in webi we are using SAP BO 4.0 .Do we nead to do any sitting to populate user exit in webi.

Thanks & Regards,

sachin reddy.