Calling Enemy Health Adding to Player Score

I have one problem lately I cannot figure out, and though there are many of the same questions as to calling other scripts, nothing seems to fit my particular situation. I have these two scripts, and I am trying to get either one to call the other and add to the player score when the enemy is hit. Can someone help me here?

enemyHealth script

var enemyHealth = 5.0; var destroyedParticles : Transform;

function Start () {

}

function Update () {

if(enemyHealth == 0.0) {

Instantiate(destroyedParticles, transform.position, transform.rotation);

Destroy(gameObject); } } function OnGUI (){

GUI.Box(Rect(10, 50, 135, 25),"Enemy 1 Health: " + enemyHealth);

}

function OnCollisionEnter(projectileCollision : Collision) { if(projectileCollision.transform.name == ("PlasmaBall(Clone)")) { enemyHealth -=1; }

}

playerScore script;

var guiScore : GUIText; private var score : int = 0;

function Start () { guiScore.text = "Score: 0"; }

function Update () {

} function OnCollisionEnter(projectileCollision : Collision){ if(projectileCollision.transform.name == ("PlasmaBall(Clone)")){

 score += 10;
 guiScore.text = "Score: " + score;
 }
     

if(score == 3000){ Application.LoadLevel("3PS_scn2"); }

}

???