Custom Table of Contents Based on Variable Button Trigger in Storyline 360

Has anyone tried creating a custom dynamic Table of Contents based on a button trigger in Storyline 360? 

I want to create a branching lesson that has mostly shared information but at points it separates to offer specified information based off of a button choice made at the start. The problem I'm running into is that it will show all of the contents in the player table of contents. Even when I set up a custom table of contents it shows both choice options. I would like to be able to have that change based off of that initial button choice. I have tried using JavaScript but can't seem to locate where in the story file or the overall published file the table of contents is located. Any ideas if this is even possible or am I barking up the wrong tree?