again, a simple admin-only trigger

Hello, i have asked this once, and i’ll ask again:

Is it possible to make a simple Lua code that will put a trigger in hammer that disables certain usegroups from going past it?

Like, lets say the trigger is set to admin, and a player walks into it, then the player dies, and one of those messages says “you cant go in here, sorry”.

i know its possible, but i dont have an attention span big enough to learn lua :<

look at this