Steam VR Input system tuto ?

Hi All,

I am working on a project using up to 5 vive trackers and pogo pins to move and use pphysical objects inside my VR game.
I am stuck with steam vr input system in 4.21 because I think I made the binding nicely (I can retrieve my input defined in UE4 inside the steam vr input binding system).
But when I trigger an action, the input is well fired from the controller (right panel in the input debugger) but no action is fired. Keep saying that actions are unbound.

Does anyone know a tutorial on how to correctly bind actions in steamvr ? It’s really annoying.

Thank you