XRSettings.enabled not working

I have a very simple function to know if XR enabled or not:

Code (CSharp):
  1. private void Start()
  2.     {
  3.         Debug.Log(XRSettings.enabled);
  5.     }
The problem is that it always return "False", but I have XR enabled! (Virtual Reality Supported - Oculus SDK).

Do someone can help me to understand what's going on?
Many thanks!