Missing trim fastner (roadster)

Can a few people with roadster do me a big favor, as i was looking over my car i saw a piece of trim that seems to be missing a fastner of some sorts, its hard as hell to even see the thing but if you look through the rear window with a light or in the sun you can see it, in the pic below the circled area is where im almost sure there should be a fastner
i looked in the etk but i cant find the piece of trim much less the fastner
if you look closely you can see the hole in the trim and a hole in the metal bracket under it, any help i need to get it right