And did you assign memory for that in User Defined tab?
If you did. Turn off the source terms, run a few iterations/one time step and try again. If any of those data calls don't have a value you may have a problem. Also, using 1-3 letter variables can cause problems if they're also used in Fluent somewhere else, hence I often use real/integer over DEFINE for coefficients.
You are navigating away from the AIS Discovery experience