Pass variable value from Rise web object with embedded interaction block to Storyline

This must be possible! :)

I'm not familiar with using JavaScript in Rise yet, but I've just used JavaScript in a web object in a Storyline course (ie code running in a custom html file) to take internal Storyline variables and use them in the web object, using this code: 

var player2 = parent.GetPlayer();
var var1 = player2.GetVar("StorylineVar1");

(I used player2 instead of player because I already have var player = GetPlayer(); in some JavaScript in Storyline.)

This code lets you take the Storyline variable, StorylineVar1, and use it in the JavaScript in the web object as var1.

I could have a tinker with some JavaScript in Rise, but I'm busy with some other stuff at the moment. I'll let you know if I get the chance to play around with it :)

[Edit - How do you have the Rise courses embedded in the SL360 module, and how do you have the SL interaction block embedded in the Rise courses?]