Change scene when connecting to GearVR

I am trying to make an Unity3D project that I have installed in a Samsung Galaxy S8 change their current scene when it is connected in the USB-C port to a GearVR headset. I have found this solution but for sme reason I can't make it work.

https://stackoverflow.com/questions...ve-in-gearvr-with-unity-c-android-application

If anyonone can help me I would be very grateful.

Thank you for your attention