User Code vs. Conditional Expression
 

I am afraid I have run myself into a dead end, but am hopeful that someone can help.

I have a set of probes arranged in space (not a presentation grid or line probe but a set of distinct probes at specific locations) and I need to be able to count and sum all of the probes in the set that are below a certain value.

I have tried pursuing conditional expressions, but that doesn't seem to jive. I also thought about user-code, but cannot find any examples of user-coded report calculations... but I could be looking in the wrong spot.

Anybody have any recommendations on how to pursue this?

It should be not too difficult with a Java-macro.