buildable gate

Hello everyone, I have a problem concerning the new world editor. I am currently making a large RTS game with several custom races and I am wanting to add constructable gates and have tried a couple methods from the forums here on hive, and they have worked in the past. One in particular...

Follow this thread and this site to understand the topic, or you don't need to. I decided to not use Unit - Replace or the variable, because they seem troublesome and cause leaks although that can be solved with custom script. So I used spell Bear Form instead, and I made several spells based on...