I have a report with four paramters.

A "Start Year" and "End Year" that are strings with values from a query, so
available valuse are 2003,2004. 2005, and 2006.
Two datetime for a "Start Transaction Date" and "End Transaction Date".

When I set the "Start Year" parameter, the report seems to post back and I
get the error:
   The value provided for the report parameter 'TransStart' is not valid
for its type. (rsReportParameterTypeMismatch) Get Online Help

The paramter was empty, so of course it is not valid.  How do I stop this
behavior?  The paramters are not dependant on each other and do not use
dynamic SQL.

Any help would be appreciated.

Thanks Shannon