Giving a building a TankSnapShot weapon

[blackheartstar]

I gave my pillbox a primay=tanksnapshot and secondary=vulcan2. I was able to build it and target terrain objects just like the tanksnapshot with mirage tank. When a terrain object was targetted the pill box turned slightly darker and made the mirage tank sound. Now as this was a skirmish game I dont know what it would look like from another players view. When a ai unit moved in to the vucan2s fireing range the game IEed.

Is there a way to make this work? Has anybody ever tried this in multiplayer to see exactly what happens to the building from anothers view?