Input Selected Key


I am followed this video to create a settings menu (widget) in which you can change your bindings :

I don’t know why, but if i follow this method, it will delete my action mappings … check my video (sorry for the quality, my app to record my screen does’nt work …) (check at 1:30) :

I am stuck since yesterday and don’t undersand why when i set an Input Selected Key, it delete the action mapping …

(Check the screens).

Help !