Prevent Learner from advancing until they have viewed all the layers

Hi Andrew

Thanks so much. I am not so experienced in Storyline to know how to so the second option you mention. And flattening the images will take a bit of time.

What I don't understand is why what I have done here isn't working (see screen grab-highlighted blue is the Object Trigger I have created). It also has a Slide Trigger of: "Set state of Next button to Disabled When the Timeline starts on This slide."

Any ideas why this does not work?

Thanks

Lisa