Whats Up With My Walls?

[Nate000]

Me and my bro are making an RPG, World of War in World Editor Unlimited. But theres a problem- I made the Human village surrounded by walls. I took a farm, changed the model file to a wall, and the wandering villagers in the village walked right through it! But when I tried to go through it, I couldn't. So now in my RPG there are these villagers running around getting killed by murlocs and ogres. (But I named the weaker ogres Org-naks) The farm model didn't work, so I took a workshop. I changed its model to a Wall End and increased the scaling value to 3.75. But for some reason, you can walk through it. You can't walk through a workshop. I don't understand the problem. Please help me.