How to enable a gui using remote events?

I have a problem that I can't seem to figure out. I need to open a gui when someone clicks on a specific dialog. I got that, but I need a script that can detect when the remote has been fire and enable the gui. Local Scripts cannot detect remotes being fired and regular scripts can, but cannot read or edit a PlayerGui, unless it made it. Can someone plz tell me how to solve this problem, thx