I'm trying to get a very simple setup running using the Sprite Library und Sprite Resolver Components. I have this spritesheet with two different character skins: Now I want to make one single animation consisting of two frames. And then I want to be able to swap the sprites at runtime for the other skin. So I thought I could set up the Sprite Library like this: Now I only need to change the category to switch my dark skin for the red one. But when I try to animate this, it doesn't work, as the category can't be changed separately anymore. It's now saved in one single Sprite Key. What happens is that I set up my animation for the dark skin, but then have no way of actually swapping to the red one. The animation will always pick the dark skin as it has a unique key. The documentation makes it seem like this is exactly what the Sprite Resolver is supposed to be used for, but it just doesn't work. Why can't I just change the category separately? Or am I doing this wrong?