Help with true/false variables
I am just now learning how to use variables. I watched the video but it does not go far enough to answer my question. I have a module with 5 topics. There is a slide with 5 buttons to access each topic. The learner can choose a button and it goes to that scene. When they finish, a button returns them to the original page to choose another button. The learner can access any of the first 4 topics in any order, but I need to set it up so that they can not view the 5th topic and complete the module until all 4 of the other topics have been viewed. How do I set this up?