Reading value of pin in g code

I swap lines if with M66 and it works.

congrats,
but food for thought why not using a while or for loop instead of repeat.
my thought is with repeat is that if it works that it continues to do it over and over regardless.
using up a lot resources and maybe potential conflict...
i mean i could be wrong my programming language is limited to vba i used in autocad and excel...

When i used while, conditional if wasn't working correct.. idk why