Ok, now this is confusing to me. When I just have a single Engine going Backwards down the track and it goes over one of the triggers , it recognizes it and triggers so the child rules will get executed. When I couple the Engine up to a Boxcar, and go down same section of track , it won't trigger and fire the child rules. How can I get it to recognize the Engine when it is couple to different boxcars, so I can get the Rule to execute.?