NGUI 객체 피킹

하나의 UI를 끌어서 다른 UI로 올려 놓을 때 

UICamera.currentTouch.clickNotification = UICamera.ClickNotification.BasedOnDelta;
Ray ray = UICamera.currentCamera.ScreenPointToRay(UICamera.currentTouch.pos);
			
GameObject obj = GameObject.FindWithTag( "tagChrInfo" );

RaycastHit Hit;
if( obj.collider.Raycast( ray, out Hit, 10 ) )
{
...
}