Jump to next slide automatically after all layers visited

I have three buttons on my slide, one for each layer. The learner can select 1, 2 or 3 in any order to view a layer. I would like to set a slide to automatically jump to another slide after all layers are visited on the slide. A state change doesn't work because it jumps as soon as the third button is selected.

In the attached file you'll see that I'm using a true/false variables, I have one set up for each slide layer set to false and then I added triggers on each layer to set that layer's variable to true when the timeline ends, but can't get it to make the jump to the next slide.

I do not have a next button on that because I want it to jump automatically.

My slide trigger option is set to when variable changes and I've tried when timeline ends and starts, none of these work.  I can't see how to set it any other way to get it to jump automatically.  Any ideas?