Fixing This Leak

I want to show floating text to only one player, so I use
This makes a memory leak, if I recall, so I would use
to remove it, but I didn't set a variable, the game creates one for the Convert to Player Group trigger, so what do I put in for the "VARIABLE?"

Oh ya, I'm a GUI guy. JASS is mostly Greek to me.

It doesn't.

Just do

set variable = player group of (owner of killing unit)
show (last created floating text) for variable
call DestroyForce(udg_variable)

Let me be skeptical about that, since you actually used Jass in the thread.