random object creation

  // VARS FOR RANDOM OBJECT CREATION
 
 // COPY FROM HERE TO END
 
 
 
   var CubePrefab : GameObject;
 
    var AmountOfCubes : int;
 
   var RandomPosx  : int;
 
     var RandomPosy : int;
 
     var RandomPosz : int;
 
  function Start() 
       {
 
          for(var i=0;i<200;i++)
          {      
         if (AmountOfCubes <=200)
            {
 
        RandomPosx = Random.Range (20,100);
        RandomPosy = Random.Range (0,0);
        RandomPosz = Random.Range (0,2042);
        SpawnRandomCube();
           }
        }
 }
    
  
       
      // Move object using accelerometer variables
     var speed = 1;
     var movey=1;
 
 
  function Update () {
 
          var dir : Vector3 = Vector3.zero;
         // we assume that device is held parallel to the ground
         // and Home button is in the right hand
         
         // remap device acceleration axis to game coordinates:
         //  1) XY plane of the device is mapped onto XZ plane 
         //  2) z plane has fixed value 1 which cause it to move in same direction 
         //but user can move in x direction with the phone acceleration sensor   
         dir.x =  Input.acceleration.x;
         dir.z = movey;
         
         // clamp acceleration vector to unit sphere
         if (dir.sqrMagnitude > 1)
             dir.Normalize();
         
         // Make it move 10 meters per second instead of 10 meters per frame...
        //  dir *= Time.deltaTime;
             
         // Move object
         transform.Translate (dir * speed);
         transform.Translate(0, 0, 1);
 }
 
  function SpawnRandomCube()
 {
 
     transform.position = Vector3 (RandomPosx,RandomPosy,RandomPosz);
 
     var RandomCube = Instantiate(CubePrefab,transform.position,transform.rotation);
 
 
    AmountOfCubes = AmountOfCubes + 1;
 
 }