JavaScript Help - Adding 5 variables to 1 for a Total Score in Storyline

You don't need JavaScript to add the value of variables. Just use a set of triggers like these: 

• The first trigger, which sets the ScoreTotal to 0, is used to ensure that the scores don't get added more than once (for example, if the user revisits the slide). 
• Instead of "when the timeline starts," the triggers could be attached to a button. 
• In the Trigger Wizard, any item with a dashed underline can be edited. That's how to access the math operators: