Hi, i made a survival arena where waves of creeps chase you. But, one hero has the ability to build a "wall", which is just a doodad model based off of the unit Scout Tower. The problem is, when you block yourself in, the units are too stupid to destroy the walls. They just walk around the walls, searching for a space to get inside. But there is none. They just walk around, letting you kill them. It really makes the game un-playable. And yes, i have them "attack-rallied" they simply wont attack the walls until all the heroes are dead. Once we die, they attack the walls. Any suggestions??