How to enable a specific gameobject child.

Hey,

How could I enable a specific gameobject whicih is a child of an object that gets instanitates.

So something like this:

 GameObject object1;
 
             object1 = Instantiate(Object2, transform.position, Quaternion.identity) as GameObject;
 
             if(foo == true)
             {
                 object1.enableInChildren("object2").enabled = true;  //this line is just an example, this is the part where I want to enable the child
             }

object2 always starts disabled and will have to, i only want to enable it when something is true.