It's in this project → https://scratch.mit.edu/projects/1166885380

Basically the question is in the title.

This is how the project is supposed to work:
The pen is always up unless in specific x and/or y position(s). In this project, it's just the x position. The pen does go down when it's in the specific x positions, but it doesn't work quite right.

Ummmm… I don’t see any problem with the project.. it works perfectly

This code should fix the problem:

forever
pen up
go to [mouse pointer v]
if <<(x position) = [-1]> or <<(x position) = [0]> or <(x position) = [1]>>> then
pen down
end
end

In your code, the pen would still be down after x = -1 or 0 or 1 when you go to mouse pointer the next time round the loop.
This causes the drawing where you don't want it.

Thanks for the help! It now works the way it's supposed to