Shoot 10 bullets at once

Hello Unity3D.I have a problem with making my bullet shoot more than one at once.In my script i can only shot one bullet at once but it doesnt shoot out randomly just diagonally upwards.I dont want that.I want it to shoot 10 bullets all at once and make make each of them move in a different direction.If anyone knows how i can do this.Can someone please tell me how?

Here’s the Script

var rocket : Rigidbody;  
    var rocket2: Rigidbody;
    var throwPower : float = 10; 
    var reloadTime = 10; //time to reload
    var timeBetweenShots = 10.0;
    var randomNumberX = Random.Range(-strayFactor, strayFactor);
    var randomNumberY = Random.Range(-strayFactor, strayFactor);
    var randomNumberZ = Random.Range(-strayFactor, strayFactor);
    private var nextFire : float =0.0;
    private var timestamp = -10.0;
    var strayFactor : int;
    function Update ()
    
    {
    if (Input.GetKeyDown("z")&& Time.time > nextFire) 
             if (Time.time > timestamp + timeBetweenShots ) {
                  Debug.Log("I'm firing now");
                  timestamp = Time.time;
    
    
    
    Switch();
    
    		
    	}   
    }	
    
    function Switch()
    {
    	yield WaitForSeconds(1);
    
    
    
     
    var bullet = Instantiate(rocket, transform.position, transform.rotation);
    bullet.transform.Rotate(randomNumberX, randomNumberY, randomNumberZ);
    bullet.rigidbody.AddForce(bullet.transform.forward * 10000);
    
     
    }

var seperation : float = 2.0;

for (var i : int = 0;i < 10; i++) {
		Instantiate (rocket, transform.position, transform.rotation + Quaternion(0,i * seperation ));
	}

replace the instantiate with the for loop.