Disabling Next Button After All Layers Complete
I am trying to disable the next button until a user goes through all of the layers of a slide. Each of the layers has audio on it, and the layers advance one by one as the media completes on each slide.
I have tried using the instructions provided by https://www.articulate.com/support/storyline/how-to-disable-the-next-button-until-users-finish-interacting-with-a-slide, but I'm having trouble getting it to work. I think my difficulty may be coming from the second step, where I need to "add a new trigger to the slide that adjusts the value of the variable to True when a specific event has occurred." I'm not sure what my "specific event" is. I want it to execute "when all layers complete," but, obviously, there isn't a choice for this.
I wasn't able to access the video screen cast demonstrating the general process (it seems to have been removed from the post -- or is just not displaying in my browsers), which might have been helpful, but still probably wouldn't have solved my problem.
I figured out how to do what I want to do by creating my own buttons, but I would rather not take up additional screen real estate with navigation buttons. I'm showing a process, and my screens are busy enough as is.
Thanks in advance for any guidance you can give me!