simple aggr and rangesum(before) question

[amien]

i have these dimensions: group, filenumber, date

expression: rangesum(before(payment, 0, ColumnNo()))

now:

i want to leave out the filenumber dimension.. but the expression should still give the sum of the rangesum based on the filenumber

SUM(AGGR(rangesum(before(payment, 0, ColumnNo())),filenumber)

is not working

[#2]

Perhaps you need a set analysis statement that doesn't select any filenumber.

Like this statement

rangesum({$<filenumber = >} before(payment, 0, ColumnNo())

I doubt the exact code will work, but I hope it helps to find the correct one