Thank you, I tried your method, and it looks good, but I have (again) a problem : I use Get Axis for the two axis, I amplify the two values got when the character run, set Vector3 value with the two new values, and finally, I set it at character controller (sorry for this very long text). It works, but when I move the camera, the character move in an unique direction,whatever the camera placement, only move on that axis.
I want to use Get Axis Vector action, but i don't know how to do it. If you understood what I said, do you know what could I do ?