You mean, switching the resolution from within a pause menu? I'd add a global variable that gets set to 1 if the pause menu is triggered, and disable input on the behaviors (if you use any). The rest of your events should be sub-events of a condition that tests against the global (so that you have two code parts, 0=no pause, everything works as planned, 1=pause, only for the events needed to do the pause menu)
EDIT: Damn, I hoped for a new video, saw that one before and was impressed...