well, there are running totals, which is not my forte, or shared variable to do the summing. Both will work.

Shared variable tend to be a group of formulas: initialize, increment, display. If you entire report is going to use the same value, you don't need initialize.

Typically they look something like this:
initialize:
shared numbervar lfy := 0;
shared numbervar fy := 0;
""//hides the assignment.
//put this formula in the group where the values reset

display, pretty simple:
shared numbervar lfy

and another for fy
shared numbervar fy

put those in the section that you want your values displayed.

obviously, the most important formula is the increment
shared numbervar lfy;
shared numbervar fy;

if {parameter} < 1905 then
lfy := lfy + {field}
else
fy := fy + {field};

""//again to hide a value being displayed
//put in the detail section



I think that what is happening is that you have formulas for summing in the same section (probably a footer or header) which means that the value is calculated for the entire group depending on what the value is right then.

HTH

Thanks to you both. I'm going to look this over first thing in the morning!