Self Service - Display Global Variable

I have a button set up where an end user passes a check number to it. Once they submit, the value they typed gets passed to a global variable.

There have been many times where the end user double-checks, or asks me what the current value of this variable is. Since they do not have access to OpCon, this is the best way to do it for now. I'm thinking it would be nice to be able to display values of global variables in some way for the user. My initial idea is to allow the "Documentation" portion of a Self Service button to translate Global Variables to their value. That way, At time of click, the value would display to the end user.

Thanks!

Elliott Kvamme