OnActivate Self Dissaper isnt enough good?
AND if you wanted that, you must to make a door with a cat door in it, wich is not possible yet.
Sure it is. All you need is a JVS door with a little 2x2 square cut out at the bottom. Then you have the JVS cat flap. The cat flap door would have 2 animations, a Swing animation and an Open animation. The JVS door would have all standard events, and then a namedbrick (or relay) event that makes the cat flap do the swing animation. Then the cat flap has just the open animation. Ta Da!