Is procedural mesh generation possible with visual scripting

I was wondering if it was possible to make procedurally generated meshes in visual scripting like in this video

https://www.youtube.com/watch?v=64NblGkAabk

I've been trying to edit this mesh script made by smart penguin

https://www.youtube.com/watch?v=DWj1B831Ka0

But I've slowly been losing my mind spending hours trying to make this mesh bigger but no matter what I do I cant seem to edit any of the triangle values because if I do the mesh just wont render at all

Here's the link to the picture of my visual script

https://snipboard.io/FfWyos.jpg