RXP GTN750 to VR

 Hi, I've bought today the plugin Reality XP GTN750 to use it in the EC135 V5. But didn't know that touchscreen wasn't usable in VR, just knobs.
The cursor mouse doesn't interact with the surface of the GTN.
Can you confirm that we must use it in 2D only, or in 3D but in a separate window only ? 

Many thanks.

The Touchscreen of the GTN750 should work in VR.
I use the Oculus Rift S and it works just fine.

Thanks.
Own a Reverb G2 without controlers, just using Mouse in VR, and if I can manipulate the knobs with the mouse, no possibility to touch the screen on the pedestal. 
 Just possible on the 3D window 
In fact, I think it's due to Xplane , not the aircraft itself

I just use the 3D window. It works great.