fireball scripting

hi everyone im making my character shoot fireball i already did it but now my question is how can i make the fireball move here is my script

var speed = 3.0;

var rotateSpeed = 3.0;

var bullitPrefab:Transform;

function Update ()

{

var controller : CharacterController = GetComponent(CharacterController);

// Rotate around y - axis

transform.Rotate(0, Input.GetAxis (“Horizontal”) * rotateSpeed, 0);

// Move forward / backward

var forward = transform.TransformDirection(Vector3.forward);

var curSpeed = speed * Input.GetAxis (“Vertical”);

controller.SimpleMove(forward * curSpeed);

if(Input.GetButtonDown(“Jump”))

{

var bullit = Instantiate(bullitPrefab,GameObject.Find(“spawnPoint”).transform.position, Quaternion.identity);

}

}

@script RequireComponent(CharacterController)

You just take the bullit var from instantiating and add force to it:

var force = 1000; //the fireball force

if(Input.GetButtonDown("Jump"))
{
    var bullit = ....; 
    bullit.rigidbody.AddForce(transform.forward * force);
}