Can not use the arrow keys to move. How to do ? thank you

Hey!
All available keys are specified in plugin's description on uMod (here). They are from rust, so you must bind something to arrow keys to use them.
To control the balloon movement look in the needed direction and press the button from configuration to move 

I did that and it does not work. Is there a key activated before?

{
"Speed Modifier": 250.0,
"Move Button": "FORWARD, BACKWARD, LEFT, RIGHT, JUMP, DUCK, SPRINT, USE, FIRE_PRIMARY, FIRE_SECONDARY, RELOAD, FIRE_THIRD",
"Disable Wind Force": true
}

You can't specify all the buttons. Use only one button

I'm sorry, but this is not working for me too. Specified 'SPRINT', but I just go up and down like a jack-in-the-box. :(