Valve's SteamVR Input Plugin

Hello !
Just tried the sample maps of the plugin, and it seems the Pinch Action is not detected, so I cannot spawn and shoot arrow with the bow.
I checked :

  • Project Settings -> Input -> FireArrowLeft and FireArrowRight are respectively bound to SteamVR Index Controller (L) Pinch Grab and SteamVR Index Controller (R) Pinch Grab
  • DefaultInput.ini file, it confirms the above
  • Steam VR Bindings Dashboard, Default Binding for UE Editor, Pinch Gestures are set to FireArrowLeft and FireArrowRight.

I added a PrintString right after the InputAction FireArrow Left (and Right) to see if they were triggered, in case there were a problem with the Arrow, but no print is done when I pinch.

My config :

  • Win7
  • UE 4.23.1
  • SteamVR 1.8.21
  • Index Controllers up-to-date
  • HMD Vive (normal, not Pro) with LightHouse 1.0