Glad to help. I think the file could be a useful example to your students of the principle.

In the end though, scaling this up to dozens of points is something better done in a traditional programming language like C or Javascript than in Isadora. You would just end up with billions of actors.

Going again with four points, a User Actor that accepted a total of four horz/vert pairs would allow you to ramp up without too much effort.

I've attached an example. It isn't pretty, but perhaps it will get you started.