Also, the default Critter Alignment Group is \g[3]
So your event would look like:
EV002 \e[48] \g[3]
Please, read the manual next time before asking a question. Everytime, you update Blizz-ABS, at least open up the manual and see what's changed in the version history. That way people don't have to remind you to read the manual, or give you instructions.