Y, i just wanted someone to say how, then i'll reply... ok, i have a building, and i need to create a unit at the position of building, inside* , and then... when i cast a spell, unit is moved to the position right of the building and unit cant enter building anymore, but when I cast another spell unit is placed again inside building, i tried to make unit flying but it cant be removed -.-', or vice versa, i tried locust but this ability cant be removed... tried to set collision size off on, but wont work xD, So ?