I have a fairly simple set expression where I need to sum all payment amounts prior to the current month. I have the following expression to do that but, I'm not getting any data. When I remove the "less than sign" from the month set, I get numbers. Cleary, the "less than sign" on the month set is the problem but, I don't know why.
Has anyone solved this problem? I've checked the Community and see that what I have scripted seems to be correct but, it's not working.