I wouldn’t make one overlay per option, instead you add one image that you hide, then using the if statements to set the URL for the overlay, and then showing it.
This is to avoid having to add 18 overlays, so it’s not as cluttered in the editor (and possibly in the code). If you do want to go the mass overlay route I can probably write up some code for that.
But with all this back and forth, it might be easier with discord or something?