Why cant I subtract point from my score?

I have one script for objects that add point value.

AddPoints.js :

 var pointsToAdd: int = 100;
     function OnTriggerEnter(hit : Collider){
         if(hit.gameObject.tag == "Player"){
             //add a tag to the player called Player, or just
             //replace it with your tag if you already have one
             ScoreSystem.myScore += pointsToAdd;
             Destroy(gameObject,0.0);
           }
     }

And I modified that code to make another script for when I want to take points as a penalty for hitting walls.

TakePoints.js

 var pointsToTake: int = 100;
     function OnCollisionEnter(hit : Collider){
         if(hit.gameObject.tag == "Player"){
             //add a tag to the player called Player, or just
             //replace it with your tag if you already have one
             ScoreSystem.myScore -= pointsToTake;
             //Destroy(gameObject,0.0);
           }
     }

both use the class Score System

ScoreSystem.js:

 static var myScore = 0;
 var DelayTime = 0;
 function Start(){    
     myScore = 0;
     Invoke("myFunction", DelayTime);
 }
  
 function OnGUI(){   
     GUI.Label(Rect((Screen.width / 2) + 20,10, 200, 30), "Score: " + myScore);
 }

for some reason my script for subtracting points will not work. Can anyone tell me what Im doing wrong.

P.S. Take Points uses OnCollisionEnter because adding a Trigger would break my walls.