Touch Crosshair problem.

I have a game in whici I use a joystick and with my other finger I can move around in an invisible rectangle on the screen an empty game object to which I have attached a crosshair.

It is working fine as long as I'm touching in that rectangle but the moment I lift my finger from that area , the object doesn't move anymore in space, because nothing is touched in that area. I need somehow to save it's position on the screen even when I lift my fingers :)

Any sugestions ?

 // public variables
 public var myobject     : GameObject;   //the empty game object that the turret and cannon wil be following
 public var range        : float = 10.0; // range of the object in the z axis
 public var moveTouchPad : Joystick;
 //private variables
 
 //public static var  TargetingArea2: Rect = new Rect(Screen.width - (Screen.width*0.9) , Screen.height*0.4, Screen.width, Screen.height/2); //tank cannot aim all the way up
 public static var  TargetingArea1: Rect = new Rect(0, Screen.height * 0.5, Screen.width, Screen.height/2); //places where the touch is read
 
 var lastpos = Vector3.zero;
 
 public var color: Color = Color.red;   
 // in this script we put the empty game object that will always be on the mouse position and is the object that our turret will be actually 
 // rotating towards
 function Start(){
         Screen.showCursor = false;            
 }
 
 function Update () {    
       
    for (var touch : Touch in Input.touches){
         
         var ray = Camera.main.ScreenPointToRay(Input.mousePosition);
 
 
              if (touch.phase != TouchPhase.Ended && touch.phase != TouchPhase.Canceled) {
                  if(TargetingArea1.Contains(touch.position) /*|| TargetingArea2.Contains(touch.position) */){
                      //myobject.transform.position = ray.GetPoint(range)
                      myobject.transform.position = Camera.main.ScreenToWorldPoint(new Vector3 (touch.position.x, touch.position.y, range ));
                  
                  }
              }
              else if (touch.phase == TouchPhase.Ended || touch.phase == TouchPhase.Canceled)
              {
                      
                      if(TargetingArea1.Contains(touch.position){
                      /// i need it the crosshair to keep the same coordinates on screen even when i lift my fingers from this area
                       
                      
                      
                      }   
                     ////
              }    
     }
 }