[SOLVED]Always Select Last added object

Ive created class of objects, that can be dragged, registered pointer events through Interfaces, there is important part of code:

Code (CSharp):

1. using System.Collections.Generic;
2. using UnityEngine;
3. using System.Collections;
4. using UnityEngine.Events;
5. using UnityEngine.EventSystems;
6.  
7. public class CollectObject : MonoBehaviour , IPointerDownHandler,IDragHandler,IPointerUpHandler
8. {
9.     public void OnPointerDown(PointerEventData eventData)
10.     {
11.         //Debug.Log(EventSystem.current.name);
12.         //EventSystem.current.SetSelectedGameObject(gameObject, null);
13.         //Debug.Log(EventSystem.current.currentSelectedGameObject);
14.         //Debug.Log("MouseDown");
15.         StartCoroutine(StartDrag());
16.     }
17.     public void OnDrag(PointerEventData eventData)
18.     {
19.         //Debug.Log("Drag");
20.         StartCoroutine(MoveDrag());
21.     }
22.     public void OnPointerUp(PointerEventData eventData)
23.     {
24.         //Debug.Log("MouseUp");
25.         StartCoroutine(StopDrag());
26.     }
27. }

As you can see i've tried directly set active object, but log and game say that object always last added / configurated.

Click works OK but always with last object, i cant undersand - why?

Big thanks to everyone who answers.

 

Colliders aren't the reason

https://www.dropbox.com/s/g3vlsagamqrhsia/Скриншот 2014-12-05 10.15.14.png?dl=0

https://www.dropbox.com/s/uxo41ck8211recg/Скриншот 2014-12-05 10.15.34.png?dl=0

click is detected anywhere, doesn't matter where to click

 

Reason was in UIImage Component wich was with Alpha = 0f & Large Size