I downlaod a Animat.-gate add-on a while ago and it had activate by "0"- open and the "1"- close, inwhich this was describe in the read me file. I just used a trigger set to West- Once and in the activation feild i used use the "0" code to open and the Deactivation code "1" to close or something close to this. This was a while ago I'll have to rummage around a bit to see. If this is what your looking for, let me know in this thread.