That's not quite what I meant. I want to add a preview art to the category itself, not to an object which is within that category. For example if you look at the vendors category, it has it's own unique icon (of a cash register) that is not used by any of the constructables. As it stands, my custom workshop category (which is a formlist containing various sub categories, also formlists) doesn't even show up in the workshop menu. I know my script is solid, and that the issue is that the formlists themselves need art. I just don't know how to attach the art to the formlist.