Set Analysis and RangeSum

[#1]

I am using the expression below to show cummulative sales on a chart the has monthly sales also.

rangesum(top(Sales , 1, RowNo() -0))

The problem I am having is I need to add a set analysis expression:

{$<RSM =-{10}>}

I can get it to work.

Help

Thanks,

Stephen

[#2]

Got it working.

rangesum(top(sum({$<RSM =-{10}>} Sales), 1, RowNo() -0))