im making a map for halflife 2 deathmatch and i cant figure out how to make a cable that dangles form the top of a support and make it move in a swinging motion. it will have a box attached to it also that i want to swing with it. its kind of like a porch swing idea but on a larger scale. ive tried using the keyframe_rope entity and the move_rope entity but with no luck! if anyone can give me a little advice that would be great.