EV_AFTER Range for Multiple DREs in a report

I have two EVDREs in my report. It's a simple report with two categories on the column, plan and actuals, and accounts on the row. I want to add a variance calculation at the end of the column to show variance between plan and actuals. I used the AfterRange, but for some reason, the calculation appears only on the first cell. I've applied the same AfterRange formula to both EVDREs and it's not doing what I want it to do.

This may be a simple question, but I just can't figure it out. Thanks in advance for your help.