[1.6] How turn on VR for Oculus in release mode

Hi,

How I can turn on VR mode for Oculus in Release build ?

I have tried with output_to_hmd = 1 and VREnabled FN, but nothing works.

http://docs.aws.amazon.com/lumberyard/latest/userguide/virtual-reality.html

It is work correctly in VR Preview of Sandbox.

Cheers