how come the Normalize() function wont work for more then one variable ? i cant see any error in my code.....

var Bullet1_direction = Vector3(15,0,45);
var Bullet2_direction = Vector3(0 ,0,1);
var Bullet3_direction = Vector3(1 ,0,0);
var length = 4;

function Update () {
var Bullet1_diagonal = transform.TransformDirection(Bullet1_direction);
Bullet1_diagonal.Normalize();

var Bullet2_diagonal = transform.TransformDirection(Bullet2_direction);
Bullet2_diagonal.Normalize();

var Bullet3_diagonal = transform.TransformDirection(Bullet3_direction);
Bullet3_diagonal.Normalize();



Debug.DrawRay(transform.position, Bullet1_diagonal * length,Color.green);
Debug.DrawRay(transform.position, Bullet2_diagonal * length,Color.red);
Debug.DrawRay(transform.position, Bullet3_diagonal * length,Color.blue);

if (Physics.Raycast(transform.position, Bullet1_diagonal,length)) {
    Debug.Log ("Bullet 1 hit green!");
}
if (Physics.Raycast(transform.position, Bullet2_diagonal,length)) {
    Debug.Log ("Bullet 2 hit red!");
}
if (Physics.Raycast(transform.position, Bullet3_diagonal,length)) {
    Debug.Log ("Bullet 3 hit blue!");
}

}

any help would be great