Static var wont work

The enemy health code I am using

Characterdamage2.js

 static var hitPoints = 100.0;
 var deadReplacement : Transform;
 var dieSound : AudioClip;
 
 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)
     {
         Detonate();
     }
 }
 
 function Detonate () {
     // Destroy ourselves
     Destroy(gameObject);
     
     // Play a dying audio clip
     if (dieSound)
         AudioSource.PlayClipAtPoint(dieSound, transform.position);
 
     // Replace ourselves with the dead body
     if (deadReplacement) {
         var dead : Transform = Instantiate(deadReplacement, transform.position, transform.rotation);
         
         // Copy position & rotation from the old hierarchy into the dead replacement
         CopyTransformsRecurse(transform, dead);
     }
 }
 
 static function CopyTransformsRecurse (src : Transform,  dst : Transform) {
     dst.position = src.position;
     dst.rotation = src.rotation;
     
     for (var child : Transform in dst) {
         // Match the transform with the same name
         var curSrc = src.Find(child.name);
         if (curSrc)
             CopyTransformsRecurse(curSrc, child);
     }
 }

Now this code in my spawning script wont work, it makes the enemies what seems like invincible

 CharacterDamage2.hitPoints += 10.0;

my entire spawn code is this

 var textColor = Color.red;
 var NumberEnemies : int;
 static var WaveNumber = 0;
 var NewWave : boolean = false;
 static var score = 0;
 
 var SpawnPoints : Transform[];
 var Enemies : Transform[];
 
 function Awake () {
 guiText.material.color = textColor;
 }
 
 function Update(){
 NumberEnemies = ((GameObject.FindGameObjectsWithTag("Enemy").Length) - 1);
 
 
 if(NumberEnemies == 0 && !NewWave){
 NewWave = true;
 WaveNumber += 1;
 SpawnEnemies();
 }
 }
 
 function SpawnEnemies(){
 yield WaitForSeconds (3);
 CharacterDamage2.hitPoints += 1.0;
 SpawnEnemy = Instantiate(Enemies[0],SpawnPoints[0].position,SpawnPoints[0].rotation);
 SpawnEnemy = Instantiate(Enemies[0],SpawnPoints[1].position,SpawnPoints[1].rotation);
 SpawnEnemy = Instantiate(Enemies[0],SpawnPoints[2].position,SpawnPoints[2].rotation);
 SpawnEnemy = Instantiate(Enemies[0],SpawnPoints[3].position,SpawnPoints[3].rotation);
 SpawnEnemy = Instantiate(Enemies[0],SpawnPoints[4].position,SpawnPoints[4].rotation);
 NewWave = false;
 
 }
 
 function OnGUI () {
     GUI.Box(Rect(10,15,75,35), "Score: " +score);
     GUI.Box(Rect(10,105,75,35), "Wave: " +WaveNumber);
 }