Aye thank you for your support on these!! Sorry for any confusion!
Hmm it should be placing pixels when is drawing is toggled on, though maybe it needs to also have is looping on first. There might be some toggling in the background getting mixed up but would you be able to post a video showing what youve got set up? Would love to take a look!
Oh also not sure that it matters but the 1,2,3 I have set were on the number pad, not sure if the normal numbers conflict with something but worth noting I guess haha