Help applying ObjectLabel.js GUIText code to multiple objects

Hi everybody I have been using the ObjectLabel script found here: link text

I have been trying to apply it to multiple game objects see my code below:

 var offset = Vector3.up;    
 var clampToScreen = false;    
 var clampBorderSize = .05;    
 var useMainCamera = true
 var cameraToUse : Camera;    
 private var cam : Camera;
 private var thisTransform : Transform[];
 private var camTransform : Transform;
 private var enemyPos : Vector3[];
 
 function Start () {
     if (useMainCamera)
         cam = Camera.main;
     else
         cam = cameraToUse;
     camTransform = cam.transform;
 }
  
 function Update () {
     var N : int = GameObject.FindGameObjectsWithTag("enemy").length;

     //Main changes to original code below
     enemyPos = new Vector3[N];
     thisTransform = new Transform[N];    
     Debug.Log("Length: " + N);
     for(var i : int = 0; i < N; i++)
     {
         thisTransform[i] = transform[i];
         enemyPos[i] = GameObject.FindGameObjectsWithTag("enemy")[i].transform.position;
         Debug.Log("gos[i]: " + enemyPos[i]); 
     }
     
     if (clampToScreen) 
     {
         
         var relativePosition = camTransform.InverseTransformPoint(enemyPos[i]);
         relativePosition.z = Mathf.Max(relativePosition.z, 1.0);
         thisTransform[i].position = cam.WorldToViewportPoint(camTransform.TransformPoint(relativePosition + offset));
         thisTransform[i].position = Vector3(Mathf.Clamp(thisTransform[i].position.x, clampBorderSize, 1.0-clampBorderSize),
                                          Mathf.Clamp(thisTransform[i].position.y, clampBorderSize, 1.0-clampBorderSize),
                                          thisTransform[i].position.z);
     }
     
     else 
     {
         thisTransform[i].position = cam.WorldToViewportPoint(enemyPos[i] + offset); // error appears here
     }
 }
  
 @script RequireComponent(GUIText)

The error that appears is that Unity does not support slicing? What does that mean and better yet can anyone edit this code so that it'll apply a guiText to multiple objects labelled enemy? Thanks in advance!

Error: Assets/scriptObjectLabels.js(29,32): BCE0048: Type 'UnityEngine.Transform' does not support slicing.