Tony, ok I got it sort of figured. Here's my code.

$.ajax({

Mostly because everything I've tried so far hasn't worked. You mind giving an example.

I would have assumed according to the doc that beforeProcessing would be a trigger point to do this, but that seems to do nothing at all.

I'd prefer not to call the query a second time just to get something that's already being returned to the grid, I just can't seem to figure out where/how to read it.