Crystal Reports Dynamic Crystal Reports are possible in vb.net20.?

Message

     Hai All,

I want
to generate reports dynamically,ie i need to change the design view  of
report at runtime??? Is it Possible??.I tried generating reports
dynamically using Formula fields , Parameter fields and Crystal Syntax
also .But i donot get correct report.
if any body have any idea plz revert me back ....................................

Your Help is Presious;