My report uses two tables:  table A which shows client demographic information and table B which shows client payment information.  The tables are linked by the client ID.  My main report is grouped by 1)client's geographic location from table A ; and 2) client name from table B.  I have a subreport that sums each client's payments which I placed in the Group 2 footer. How can I now sum payments of all clients by geographic location?  There are several parameters in both the main and subreport.  I've tried passing a shared variable from the subreport to the main report, but it won't let me sum it.  Thanks in advance for your help.