Creating a game similar to ant smasher? Error

Hi there, This is what I have done so far.

It does not seem to be working.. any advice?

1)Create a sphere and make it as a prefab.Rename it as enemy.

2)Create an Empty GameObject and rename it as LevelHandler.

3)Create an Empty GameObject and rename it as ScoreHandler.

4)create a script for enemy and add the following code. Drag the script to enemy and apply.

 #pragma strict
 var speed:float;
 var effect:GameObject;
 var scorehandler:GameObject;
 function Awake () {
 scorehandler=GameObject.Find("ScoreHandler");
 var temp:float=LevelHandler.level;
 Debug.Log(temp);
 speed=temp/10;
 }
 
 function Update () {
 transform.Translate(0,0,speed*Time.deltaTime);
 }
 
 function OnMouseDown()
 {
 scorehandler.gameObject.SendMessage("AddScore");
 Instantiate(effect,transform.position,transform.rotation);
 Destroy(gameObject);
 }
 

5)create a script for levelhandler add the following code. Drag the script to LevelHandler in hierarchy

 #pragma strict
 
 public static var level:int=1;
 
 var enemy:GameObject;
 function Start () {
 level=1;
 InvokeRepeating("Bug",1.0,1.0);
 }
 
 function Update () {
 
 }
 
 
 function Bug()
 {
      var pos=Random.Range(-1.0,1.0);
      
      Instantiate(enemy,Vector3(pos,0,1),transform.rotation);
 }
 
 function StopBug()
 {
   CancelInvoke("Bug");
   var obj=GameObject.FindGameObjectsWithTag("Finish");
   for(var i=0;i<obj.length;i++)
   {
      Destroy(obj[i].gameObject);
   }
   
 }
 
 
 function IncreaseLevel()
 {
   level+=1;
   
   yield WaitForSeconds(2);
   InvokeRepeating("Bug",1.0,1.0);
    scorehandler.gameObject.BroadcastMessage("LevelNo",level);
 
 }
 

6)create a script (C#)for scorehandler add the following code. Drag the script to ScoreHandler in hierarchy

 using UnityEngine;
 using System.Collections;
 
 public class ScoreHandler : MonoBehaviour {
  public int[] tlevel;
  public int level;
  public int score;
  public int bug=0;
  private GameObject LevelHandler;
  // Use this for initialization
  void Start () {
   LevelHandler = GameObject.Find ("LevelHandler");
   level = 1;
  }
  
  // Update is called once per frame
  void Update () {
  
  }
   void AddScore()
  {
 
 
   for (int i=0; i<tlevel.Length; i++) {
       if (level == tlevel [i]+1) {
     if (bug >= 10) {
         LevelHandler.gameObject.SendMessage ("StopBug");
    
         LevelHandler.gameObject.SendMessage ("IncreaseLevel");
         bug = 0;
     }
       }
     }
   
   bug += 1;
   score += 10;
  }
  void OnGUI()
  {
   GUI.Label (new Rect (Screen.width - 100, 25, 100, 100), "Score " + score);
  }
 
  void LevelNo(int lev)
  {
   level = lev;
  }
 
 }

7)Place enemy prefab to enemy in hierarchy for LevelHandler script

8)Change tlevel size to 10 in scorehandler script in inspector and give values from 0,1,2,,,...to 9.

I keep getting error "unknown identifier: scorehandler" from the levelhandler script.

What am i doing wrong?.. any help is appreciated.