ok, i got a couple of models and skins from a different map. I imported them into the world editor, i make a custom hero unit and switched the model file of that unit with the custom model. When i put the new unit on the map, it turns into a black and green checkered box and when i go in the map, it just shows a shadow where the unit/hero was placed. Why does it do this? Do i have to do something else to make it work?