Instead of an integer, why not just sending in the picture you want to be displayed?
Or better yet, an array of mix and match components with render offsets so you can combine your own bust from parts.
Viewing post in Pixel Game Maker MV Bust Control comments
Good question. The reason I use variables is because theres issues displaying or removing the busts sometimes. This is one of the safer ways. This also cancels the bust and replaces it, while keeping it in the same position - so it's easier to use than having to constantly readjust the position.
I could add the feature of mixing and matching parts to busts, that's easy. I would need the parts/graphics to do this though, preferably ones that can be used for commercial purposes. If someone provides this, then I'll consider it.