Instantiating independent from the prefab gameobjects

I am instantiating a Cube, when I press the right button, I want to activate a UI panel which is used for the cube only. But when I right click on the cube it activates all the UI panels for all the cubes that I instantiated on the scene, including the prefab one. How can activate the UI for the exact cube that I am clicking on ?

The code for instantiating the cube.

Code (CSharp):

1. Instantiate(prefabPlacementObject, point, Quaternion.identity);

The code for the right click.

Code (CSharp):

1. if (Input.GetMouseButtonDown(1))
2.         {
3.             gameObject.transform.GetChild(0).gameObject.SetActive(true);
4.         }

 

Take you if statement out of update. That's why it is running on all the cubes. Just do this instead;

Code (CSharp):

1.     public void OnMouseDown()
2.     {
3.         gameObject.transform.GetChild(0).gameObject.SetActive(true);
4.     }

 

Thank you. Is there a function for right mouse button not left ?

 

It worked with OnMouseOver()

Code (CSharp):

1. private void OnMouseOver()
2.     {
3.         if (Input.GetMouseButtonDown(1))
4.         {
5.             gameObject.transform.GetChild(0).gameObject.SetActive(true);
6.         }
7.     }

Thank you !