Yeah, you won’t be able to add all 30 layers at once with alpha=0. But the trick to avoiding blinking is to set the next layer to show=true, alpha=0 before the time comes to show it. Then, when the time comes, set alpha=1 on that layer and it will appear instantly without blinking. At the same time, set the next layer’s show=true, alpha=0 so it will be ready when its time comes. Does that make sense?
Kevin