How to change the caption of parameter at run time

Hi,
I would like to change the caption of parameter based upon the other
parameter value in RS 2000 / 2005.
Thankstry using conditional logic
eg
=iif(Parameters!FieldName.Value = testvalue, value if true , value if
false)|||oops posted to wrong thread - sorry
andygadget wrote:
> try using conditional logic
> eg
> =iif(Parameters!FieldName.Value = testvalue, value if true , value if
> false)