ArgumentException: Input Button Firel is not setup. To change the input settings use: Edit -> Project Settings -> Input Shot Script.Update () (at Assets/Shot Script.js:11)

I have this problem :

ArgumentException: Input Button Firel is not setup.
To change the input settings use: Edit → Project Settings → Input
Shot Script.Update () (at Assets/Shot Script.js:11)

How to do ?

This is my code :

#pragma strict

var bulletCasing : Rigidbody;
var ejectSpeed : int = 100;
var fireRate : float = 0.5;
private var nextFire : float = 0.0;
private var fullAuto = false;

function Update () {

if(Input.GetButton("Firel") && Time.time > nextFire){

nextFire = Time.time + fireRate;

var bullet : Rigidbody;

bullet = Instantiate(bulletCasing. transform.position, transform.rotation);

bullet.velocity = transform.TransformDirection(Vector3.left * ejectSpeed);
}

if(Input.GetKeyDown("v")){

fullAuto = !fullAuto;

}

if(fullAuto == true){
fireRate = 0.10;
}else{
fireRate = 0.5;

}

}

It’s called “Fire1” like Fire and the number one, but NOT Fire and the lower case letter “L” or elllllllllllllllllll. Change that and you should be fine if Input has the stand/default setup.