Hide Menu (hamburger button) with code until end of module - Storyline 360

Is there any code available that I can use in conjunction with a variable (ex. ModuleViewed=False), that when the learner reaches the last slide, I set  ModuleViewed=True and I can then execute Javascript that turns on the visibility of the menu (hamburger) button in the player? Then upon revisting any of the slides, the menu (hamburger) button stays visible? I'm not interested in sliding the menu itself out (the learner can click the menu button to see more), just toggle the visibility of the button in the player.