ok heres an easy setup, make a wall of whatever bricks you want, name them all the same thing. The a little away from it place a 1x1 and a 1x1 on top of eachother, then on top of that a red 1x1 circle. Wrench the circle and say OnActivate-NamedBrick-fakekill
(whatever the name is)
Then once you activate it by clicking run into the wall-mess around with that setup and youll learn some new things