Auto taggin most recent draft

I have a folder that contains all of my writing projects. In each project folder I have a folder called drafts which has PDF exports for each draft I've done. I want Hazel to tag the newest PDF in each Draft folder as Current Draft. For the life of me I can't seem to get this to work.
Side Note: I also don't want to have to add a new folder to Hazel every time I start a new writing project.
Side Note: I also don't want to have to add a new folder to Hazel every time I start a new writing project.