Transparency not working

i have grey values in my opacity map that i cant get to show up and I’ve looked all over and cant find anything to solve this. The one thing i keep seeing is setting the translucency lighting mode to TLM surface, but out of the 5 or so light modes i have, none of them say TLM anything.

I believe TLM Surface had a name change to Surface Translucency Mode or something like that.