I have some VBA code that updates cells when certain other cells have values input. I'd like this code to run right after Crystal Ball randomly changes any of the "assumption" cells which coincide with target cells in the custom VBA, then allow Crystal Ball to continue its simulation after the custom VBA code updates the worksheet. It seems that I'm going to need access to the VBA within the Crystall Ball modules to be able to do this. Does anyone have any experience with doing such a thing?