Ciao Alessandro,
What vr_marco suggested is the quickest way to achieve what you need.
In addition to that I strongly suggest you to use Branch nodes and print strings, to check ( for every single setup you create ) if the setup itself is being done accordingly.
By doing that you’re able to perfectly understand what’s going on, and quickly check if something is missing and where the problem is.
Also follow the tutorials by mitchvrlab, those were life saving when I first started with VR 