Advance to next slide from slide layer

Hi,
I am newer to Storyline and still getting the hang of things. I have started to build a course with slides and slide layers that are triggered by buttons. Is there a way to make a trigger from a layer that would advance the learner to the next slide? When I add a trigger on the layer it seems to apply it to the base layer, not the layer that I wrote the trigger on. Do I need to add a condition that allows the slide to advance once the layer has been viewed?

 

Thanks!

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