HEDGEMAGE'S PROFILE

I want to use a skill to swap the weapons of another combat in the middle of battle.
So far, a common event I put in place is supposed to switch on when another character uses a skill, I made it a parallel process event that changes the equipment then turns its switch off (in case its used again). Its not working, at all, I'm wondering if it would work if I made it a battle event. Is it even possible to change equipment in battle?

(the purpose of this is to change the attack of a character that's on auto-pilot, to give the illusion another character is "commanding" them)