Support needed with changing states of next and previous button
I'm not new to the community, but new to posting. Hoping someone can help me with finding a solution to a issue i'm stumped on. On a few of the slides I am working on I set conditions ( that work) i.e, does not allow you to proceed to the next slide until all objects are visited. I also Changed the state of the next button to disabled when timeline starts, changed the state of the next button to normal when (the variable) was complete.
The problem is when I go to review the course and want to go back to the previous slide it does not reset ( meaning a user would not be able to go back to review the content).