Scrolling Combat Text

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//----------------------------------------------------------------------
//Main Combat Text Script
//----------------------------------------------------------------------


private var scroll: float = 0.08; // scrolling velocity private var duration: float = 1.5; // time to die private var alpha: float;
private var alpha : float = 4.00;
private var duration : float = 1.50;

function Start(){

    guiText.material.color = Color(1,1,1,1.0);
    alpha = 1;
}

function Update(){

    if (alpha>0){
            transform.position.y += scroll*Time.deltaTime;
            alpha -= Time.deltaTime/duration;
            guiText.material.color.a = alpha;

    }
    else {
        Destroy(transform.gameObject);
    }
}







//----------------------------------------------------------------------
//Other script to call combat text
//----------------------------------------------------------------------

var ptsPrefab: Transform; // drag the prefab to this variable in Inspector

function spawnPts(points: float, x: float, y: float){
    x = Mathf.Clamp(x,0.05,0.95); // clamp position to screen to ensure
    y = Mathf.Clamp(y,0.05,0.9);  // the string will be visible
    var gui: Transform = Instantiate(ptsPrefab,Vector3(x,y,0),Quaternion.identity);
    gui.guiText.text = points.ToString();
    gui.guiText.material.color = Color(1,1,1,1.0);

}



//----------------------------------------------------------------------
//last piece of code to call function
//----------------------------------------------------------------------

spawnPts(100,0.3,0.4);