Totaling subreport data on each page

I have 5 subreports linked to the main report all based on Employee ID. They each pass their data via a shared variable. The data is being passed to the main report without a problem. When I try to total each page (one per employee), I am not getting the correct total when there is a blank value for one of the subreports. If the value should be 0, the subreport is still holding the value from the previous employee, and adding that into the total - even though it is not displaying a total.

Is there a way to clear the shared variable for each page (employee). I have tried putting a reset in the page footer, but it doesn't seem to work. I have also tried putting a reset variable in the header of the subreport - that also didn't work.

My subreports are currently located in the details section of the main report. My report total (on each page) is located in the details b section, along with the shared variables that bring the totals from the subs.

How can I get the shared variables cleared after the totaling of each page? I'm using Crystal 2008, and I'm stumped!