Algodoo

In this course, all marbles must fail or complete a course before they get a second attempt. To start, click the box that says 75.
If there are any issues with the code, please tell me in the comments.
To use:
{Must require advanced knowledge of scripting}
Set Scene.my.spotst to however many marbles you are starting with.
Set Scene.my.spots to however many marbles you want to let through the course. (Ignore for things like finalies or other stuff)
At every place the marbles can fail use this code:
(e)=> {e.other.pos=[(Starting machiene from this leg); Scene.my.marbles=Scene.my.marbles+1}
At the finish line you should use this code:
(e)=> {e.other.pos=[(Place where you want the marbles to go afterwords]; Scene.my.spotst=Scene.my.spotst - 1}