Problem to add GameObject a one List

Hi,
I want add objects when drag in second inventory a one list but i can't
i have this code when item is dragged in second inventory but now the my list Add automaticly the childs that contain the objects but i want this happens only drag the object in place.

Code (CSharp):

1. [SerializeField] Transform slots;
2.  
3.     public List<GameObject> itemsList;
4.     // Use this for initialization
5.  
6.     void Start () {
7.         itemsList = new List<GameObject> (); // Inicializa a lista de Objectos
8.  
9.         HasChangedPlace ();
10.     }
11.        
12.  
13.     public void HasChangedPlace(){
14.        
15.  
16.         foreach (Transform item in slots) {
17.             if(!itemsList.Contains(item.gameObject)){
18.                
19.             itemsList.Add (item.gameObject);
20.  
21.  
22.                 Debug.Log (item.gameObject);
23.  
24.  
25.             }
26.                
27.         }
28.     }
29. }

 

This code does nothing to drag and drop. You must use a script on object that has got a method OnMouseDrag
https://docs.unity3d.com/ScriptReference/MonoBehaviour.OnMouseDrag.html

Code (CSharp):

1.  
2. public class ObjectToDrag : MonoBehaviour
3. {
4.  
5.     float zPos_Flt ;
6.  
7.     void Start()
8.     {
9.        ..
10.     }
11.     void OnMouseDrag ( ) //Press mouse button on the object, and then move without releasing
12.     {
13. ....
14.  
15.     }
16.  
17. }