Valve Index & Input manager

I've built a lightweight movement system supporting Oculus, Vive & 2D with Unity's internal button mapping. The right system gets initialized at start. It was way easier to built own multisystem rig, as I also handles the forced in-between scenes with the same system. Keyboard and VR are also cross-supported. All working good.
However, I don't own Valve Index and I'd like to add support to it also (fingers & buttons). I don't use SteamVR, so I would need to get input axis of the fingers & buttons with the built in system.

I just can't seem to find any information of the Index mapping other than Unity button ID. Without able to make any tests, I'm shooting to dark.

This is a line, which handles forward movement detection;
if (Input.GetKey("w") || Input.GetAxis("Oculus_CrossPlatform_PrimaryThumbstickVertical") > 0.95f) doMove(1);

How can I do the same with Valve Index controllers and especially check the fingers?

Any help greatly appreciated!

Win10 64bit, Unity 2019.3.06f

 

AFAIK Index only works with Steam 2.0 Actions input

 

Thanks for the info, pointless to struggle with it then! I already setup the SteamVR and actions, all working!