Variables in lightbox slides
I have a slide that is an interactive lightbox. I want to ensure that the participants click on 3 different hot spots on the lightbox slide prior to closing the lightbox. on regular slides, i use a variable and add a value each time they click, then activate next button based on = to or > than the required # of clicks. Any way to prevent them from clicking on the lightbox "x" to close the window until they complete all the interactive elements on the lightbox slide?? Can't seem to figure it out!
Thanks for the help!