Lifebars not appearing above enemies' heads

function Start () { thisTransform = transform; if (use$$anonymous$$ainCamera) cam = Camera.main; else cam = cameraToUse; camTransform = cam.transform; }

// Find the closest enemy function FindClosestEnemy() : GameObject { // Find all game objects with tag Enemy var gos : GameObject[]; gos = GameObject.FindGameObjectsWithTag("Enemy"); var closest : GameObject; var distance = $$anonymous$$athf.Infinity; var position = transform.position; // Iterate through them and find the closest one for (var go : GameObject in gos) { var diff = (go.transform.position - position); var curDistance = diff.sqr$$anonymous$$agnitude; if (curDistance < distance) { closest = go; distance = curDistance; } } return closest; }

function Update () {

 enemy = FindClosestEnemy();
 go = enemy.transform;
 
 if (clampToScreen) {
     var relativePosition = camTransform.InverseTransformPoint(target.position);
     relativePosition.z = $$anonymous$$athf.$$anonymous$$ax(relativePosition.z, 1.0);
     thisTransform.position = cam.WorldToViewportPoint(camTransform.TransformPoint(relativePosition + offset));
     thisTransform.position = Vector3($$anonymous$$athf.Clamp(thisTransform.position.x, clampBorderSize, 1.0-clampBorderSize),
                                      $$anonymous$$athf.Clamp(thisTransform.position.y, clampBorderSize, 1.0-clampBorderSize),
                                      thisTransform.position.z);
 }
 else {
     thisTransform.position = cam.WorldToViewportPoint(target.position + offset);
 }

}

public class EnemyLifeBar : $$anonymous$$onoBehaviour {

 public Transform target;  // Object that this label should follow
 public Vector3 offset = Vector3.up;    // Units in world space to offset; 1 unit above object by default
 public bool clampToScreen = false;  // If true, label will be visible even if object is off screen
 public float clampBorderSize = 0.05f;  // How much viewport space to leave at the borders when a label is being clamped
 public bool use$$anonymous$$ainCamera = true;   // Use the camera tagged $$anonymous$$ainCamera
 public Camera cameraToUse ;   // Only use this if use$$anonymous$$ainCamera is false
 
 public int maxHealth = 100;
 public int curHealth = 100;
 
 public float healthBarLength;
 
 public Font healthBarFont;
 
 Camera cam;
 Transform thisTransform;
 Vector3 thisVector;
 Transform camTransform;

 void Start () 
 {
     healthBarLength = 200;
     
      thisVector = new Vector3(transform.position.x, transform.position.y, transform.position.z);
     if (use$$anonymous$$ainCamera)
         cam = Camera.main;
     else
         cam = cameraToUse;
 }
 void OnGUI() 
 {
     GUI.skin.box.font = healthBarFont;
 
     GUI.Box(new Rect(thisVector.x, thisVector.y, healthBarLength / (maxHealth / curHealth), 20), curHealth + "/" + maxHealth);
 }

 void Update()
 {

     camTransform = cam.transform; 
     
     if (clampToScreen) 
     {
         Vector3 relativePosition = camTransform.InverseTransformPoint(target.position);
         relativePosition = new Vector3(relativePosition.x, relativePosition.y, $$anonymous$$athf.$$anonymous$$ax(relativePosition.z, 1.0f));
         thisVector = cam.WorldToViewportPoint(camTransform.TransformPoint(relativePosition + offset));
         thisVector = new Vector3($$anonymous$$athf.Clamp(thisVector.x, clampBorderSize, 1.0f - clampBorderSize),
                                      $$anonymous$$athf.Clamp(thisVector.y, clampBorderSize, 1.0f - clampBorderSize),
                                      thisVector.z);
     }
     else 
     {
         thisVector = cam.WorldToViewportPoint(target.position + offset);
     }
 }
 
 public void AdjustCurrentHealth(int adj)
 {
     curHealth += adj;
     
     if (curHealth <= 0)
         Send$$anonymous$$essage("Die");
     
     if (curHealth > maxHealth)
         curHealth = maxHealth;
     
     if(maxHealth < 1)
         maxHealth = 1;
     
     healthBarLength = healthBarLength * (curHealth / (float)maxHealth);
 }