How can i drag my cubes at a time with mouse....?

hi every one i am new to unity scripting :(

i have 3 cube with different position, i have to drag these three cubes at a time with mouse. but these this is not working, i giving my code i tried a lot but its is not working. please help any one

 #pragma strict
 
 private var screenPoint: Vector3;
 
 private var offset: Vector3;
 
 private var curScreenPoint : Vector3;
 
 private var curPosition : Vector3;
 
 
 public var peel1:GameObject[];
 peel1=GameObject.FindGameObjectsWithTag("Player");
  
 function Start () {
 }
  
 function Update () {
 
 }
  
 function OnMouseDown () 
     {
         screenPoint = Camera.main.WorldToScreenPoint(gameObject.transform.position);
         offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z));
         Screen.showCursor = false;
     }
  
 function OnMouseDrag() 
     { 
         curScreenPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);
         curPosition = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
        for(var i=0;i<peel1.Length;i++)
       {
             peel1.transform.position = curPosition;
       }
     }
  
 function OnMouseUp()
     {
         Screen.showCursor = true;
     }