I tried code tableCloth.dyn and have this error message in the IsLine box: Error: Custom node definition is not loaded! Please need helpe!
I do not understand the process. Please help if you can make it in my file. Below is dropbox link. You would save my life
Here are instructions on how to install a package :
John Pierson pointed out the one you need to install
Here is a YouTube video that might help you. https://youtu.be/EgyYwLWryqo
Best of luck.