Hey, thanks for pointing that out, turns out I was just blind and didnt notice that this is where I was supposed to get the files form.
I only checked beneath the video as there were links in the first one.
At least that let me explore partially writing it myself up until now.
Though this may go beyond the scope of this free course, I couldnt figure out how you added the IntProperty to the UI, doing it the way as given doesnt work for me.
I had to work around it by putting it into the scene context.