how do a replace the connection Provider in a subreport?

I know how to do it for the main report by using:

ISCDReportClientDocument.ReportClientDocument.DatabaseController.ReplaceConnection.

When I try the same code with a sub report I get "Not supported within subreports".

Please help have hundreds of reports that need to go to SQLNCLI11; don't want to do this by hand.

Ty