Damage Receiver add Score

i try to make fps game from fps tutorial i want to add score when i destroy a game object use my machine gun or rocket launcher....

here the damage receiver script:

var hitPoints = 100.0;

var detonationDelay = 0.0; var explosion : Transform; var deadReplacement : Rigidbody; var score = 100;

function ApplyDamage (damage : float) { // We already have less than 0 hitpoints, maybe we got killed already? if (hitPoints <= 0.0) return;

hitPoints -= damage;
if (hitPoints <= 0.0) {
    //add score
    BroadcastMessage("AddScore", score, SendMessageOptions.DontRequireReceiver);
    // Start emitting particles
    var emitter : ParticleEmitter = GetComponentInChildren(ParticleEmitter);
    if (emitter)
        emitter.emit = true;

    Invoke("DelayedDetonate", detonationDelay);
}

}

function DelayedDetonate () { BroadcastMessage ("Detonate"); }

function Detonate () {

// Destroy ourselves
Destroy(gameObject);

// Create the explosion
if (explosion)
    Instantiate (explosion, transform.position, transform.rotation);

// If we have a dead barrel then replace ourselves with it!
if (deadReplacement) {
    var dead : Rigidbody = Instantiate(deadReplacement, transform.position, transform.rotation);

    // For better effect we assign the same velocity to the exploded barrel
    dead.rigidbody.velocity = rigidbody.velocity;
    dead.angularVelocity = rigidbody.angularVelocity;
}

// If there is a particle emitter stop emitting and detach so it doesnt get destroyed
// right away
var emitter : ParticleEmitter = GetComponentInChildren(ParticleEmitter);
if (emitter) {
    emitter.emit = false;
    emitter.transform.parent = null;
}

}

i want to show score on my gui but it don't work

here my score script:

var playerScore = 0;

function OnGUI () { GUI.Button (Rect (10, 10, 100, 20), score.ToString()); }

//So that you can print your score, etc.

function AddPoints(score : int) { playerScore += score; }

i use BroadcasMessage to store score value to score script

anybody can help???

If its added to `playerScore`, then why do you try to write out `score`? :)

Edit:

Because my joke of an answer/question may have confused some. Here is what I mean:

var playerScore = 0;

function OnGUI()
{
    // Change "score" to "playerScore
    GUI.Button(Rect(10, 10, 100, 20), playerScore.ToString());
}

function AddPoints(score : int)
{
    playerScore += score;
}