I have tried the ReporItems reference as you mention. However, the error I get on that is that ReportItems can only reference items in the Report Header or Report Footer,...

I found the solution.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/rsadmin/htm/drp_customizing_v1_476q.asp?frame=true

It worked fine.

Steve

I have the same problem. Could use a solution.