SEE SAW HELP

Hello All.... really cant find any solid info on making a see saw in game salad. I cant imagine its that tricky but for some reason i cant seem to grasp it...
I wanted to make something similar to this See saw in coin drop http://farm6.static.flickr.com/5149/5657860418_2d8ff0dfbd.jpg
ANY CLUES POEPLE THANKS>>>> !!
I wanted to make something similar to this See saw in coin drop http://farm6.static.flickr.com/5149/5657860418_2d8ff0dfbd.jpg
ANY CLUES POEPLE THANKS>>>> !!
Comments
Then constrain both the self position X and Y to the variables you made startX and startY
Darren.