CSV Export -show hide Hidden Column?

[karthikeyan_ngl]

Cognos Report studio 8.3 -I have to display the report columns based on the prompt selection(hide /show), I have used the conditional style and achived it .In the report page we have button called CSV export.I have set the drill through and set run as "CSV" and pass the parameter value also.But its exporting the hidden columns also how to fix it  .

[bi4u2]

What about using a render variable rather than a conditional style? That way the hidden columns would not even be generated.

[karthikeyan_ngl]

Already i have tried that also...
http://www-01.ibm.com/support/docview.wss?uid=swg21338828