percentage health bar

hi, is there a way to make a GUI percentage health bar? i have the script to lose health is there a way to make it start at 100% and go down 10 on every OnTriggerEnter that collides with my tag "evil shot" thanks all!!!

var Health = 100;

static var dead = false;

function Update() {

if (Health <=1)

{
    dead = true;   
}

}

function OnTriggerEnter(hit : Collider){

if(hit.gameObject.tag == "evil shoot")

{ Health -= 10;

Destroy(hit.gameObject);

}

}

function LateUpdate()

{ if(dead)

{

    transform.position = Vector3(3386.499,211.0097,707.7693);

    dead = false;

}

}

So you need to translate the numbers into a health bar? This video should help:

http://www.youtube.com/watch?v=iER_LFwi1-U

Good luck!

-Robert

NOTE: I did not make the video.