Unity XR get controller thumb stick axis

I'm trying to setup VR movement with Rift S touch controllers, I have controller positional tracking in but i cannot get any value from the stick movement on the controller. Also cant find much help about the XR input system. I currently have:

 void Update()
 {
     SetControllerPositions(_leftDevice, LeftHandController);
     SetControllerPositions(_rightDevice, RightHandController);

     updateMovement();
 }

 private void SetControllerPositions(InputDevice device, GameObject controller)
 {
     if (device.TryGetFeatureValue(CommonUsages.devicePosition, out var position))
     {
         controller.transform.position = position;
     }

     if (device.TryGetFeatureValue(CommonUsages.deviceRotation, out var rotation))
     {
         controller.transform.rotation = rotation;
     }

 }

 private void updateMovement()
 {
     if (_leftDevice.TryGetFeatureValue(CommonUsages.primary2DAxis, out var vector))
     {
         Debug.Log(vector);
         gameObject.GetComponent<Rigidbody>().AddRelativeForce(vector * 1, ForceMode.Acceleration);
     }
 }

How do i get the thumb axis?