conditional format on function fabs (absolute value)

[124psu]

I've set up my conditional format to 2 columns so that end users can easily identify which #'s are not matching. 

The 2 columns are RETURN and SPENT. The POS system will always make the number negative on returns. If the numbers match regardless of -/+ I want them to be highlighted green, and if the numbers do not match highlight them red. 

My syntax for both columns in the background color expression:

if(fabs([RETURN]) = fabs(([SPENT])), green(), lightred())

My syntax doesn't seem to be taking into account of the fabs function. Not sure what the deal here might be. Any ideas?

[sunny_talwar]

What are the exact expressions you are using for the two columns you have in the screenshot? Are they just field names? RETURN and SPENT?

[124psu]

Hi Sunny, that is correct.

1st column - if(sum(fabs([RETURN])) = sum(fabs([SPENT])), green(), lightred())

2nd column - same thing but the measures are switched.

I did find something a bit off, as there was many cases where both values would be "0" and would be highlighted red when it should in fact be green. Also double checked our data to make sure they weren't minuscule numbers just being shadowed but they are, in fact "0".