Embedding Rise in Storlyline

Hi 

I am able to embed my rise course into Storyline, easy peasy. In Rise I have course completion button which I think won't work whilst it is in Webobject. 

 

What I want is: when user clicks the course completion in Rise, it talks to Storyline so the next button is activated. 

I have read JavaScript would need to be inserted, questions: 

Is it inserted in Storyline but on that slide where Web object is? 

How will the true false variable work in this case, can someone pls help. I have a variable made riseCompleted, if someone can help me with this conundrum that will be divine