How to enable a children of a clone object in Unity?

Question

I hold my clones in a list for GUI operations in Unity3D & C#.

button = Instantiate(BlackBox, Vector2.zero, Quaternion.identity) as GameObject;
buttons.Add(button);

How to enable ArrowRight in this situation?

I want to reach ArrowRight to enable it. I tried variations of this kind of methods:

buttons[index].gameObject.transform.GetChild(1).gameObject.SetActive(true);

but it doesn't work. Objects' components.

Answer 1

Solved:

instead of:

buttons[index].gameObject.transform.GetChild(1).gameObject.SetActive(true);

use:

buttons[index].transform.GetChild(1).gameObject.SetActive(true);