Button on base layer needs to stay disabled
I have a slide with 6 buttons. Each button takes the user through a series of three layers (the first layer presents new content; second layer asks a question about the content and third/fourth layer tells the user if they answered the question correctly or incorrectly) and then back to the base layer where they will choose one of the other buttons to explore more new content. Users can select the buttons in any order they choose.
I need each button that has already been selected by the user to remain in a visited state for the remainder of the slide. I need a continue button to become active (in a normal state) after all the buttons have been visited.
After users select the first button, go through the first set of slide layers, and then return to the base layer there is no problem because that button shows up as visited, as it should. However, after users select the second button and goes through the second set of layers and return to the base layer, the second button now shows up as visited, but no longer the first button. The first button now appears in its normal state instead of its visited state.
How can make each button remain in its visited state for the remainder of the slide?