save button state when slide is revisited
I have a custom 'next' button that is initially invisible until the 'state' of a series of objects have been 'visited'. Pretty straightforward. This works fine, however once the learner advances to the next slide and then hits 'back' to return to this slide, the 'next' button is no longer visible and doesn't change to it's 'normal' visible state even though all of the required objects have been 'visited' to reveal the 'next' button.
So how do I save the state of my 'next' button so that it remains in its 'normal' visible state when a learner revisits the page?
I'm sure this question been answered before but I can't seem to find a solution. Can someone point me in the right direction? Thanks.