Detect and react to platform

So, I have several scenarios that have to work on multiple platforms, specifically Oculus headsets, PC web browsers, and Google Cardboard (on iOS).

The "Exit Scenario" action only works on one of those.

So ... my "Exit" button currently triggers the Exit Scenario action, and 2/3 of the time it's meaningless. If I could detect the platform, I could have the button reveal an Info Card explaining how to exit on that specific platform, e. g. "Tap the Oculus button" or "Take the phone out of your headset and tap the arrow at the top left corner." If I don't know the platform, I can't do anything with confidence that it's correct.

In Lectora I can simply use a variable that shows the current platform in a condition. Does CVR have anything similar?