Do a search on Planktonic Triggers. They are the most suitable triggers for reef tanks. They are always going to be a higher risk fish than your typical reef fishes.
I have kept a Niger Trigger in my reef for the last 6 months with no problems. He is still pretty small - about 4 inches now. I will probably remove him once he reaches about 6 inches. I keep Shrimp, Crabs, Snails, Clams, and a ton of other critters including around 100 corals.....no problems from mine.
As I said...it's a chance. In my experience - I would certainly not try a Huma Huma Trigger in a reef tank. Those guys tend to be pretty nasty overall and they like to "taste" just about anything they see.
Good luck.