Question OnMouseDown() , is not changing variables declared outside.

I am using

OnMouseDown()

like following

Code (CSharp):

1.  public class Rotateprents : MonoBehaviour
2. {  
3.       GameObject P1;
4.       GameObject C1;
5.       GameObject C2;
6.   void OnMouseDown()
7.      {
8.          if (transform.name.Contains("Parent"))
9.          {
10.              P1 = transform.gameObject;
11.              C1 = P1.transform.GetChild(0).gameObject;
12.              C2 = P1.transform.GetChild(P1.transform.childCount - 1).gameObject;
13.              Debug.Log(C1);
14.          }
15.          else if (transform.name.Contains("child"))
16.          {
17.              P1 = transform.parent.gameObject;
18.              C1 = P1.transform.GetChild(0).gameObject;
19.              C2 = P1.transform.GetChild(P1.transform.childCount - 1).gameObject;
20.          }
21.        
22.      }
23.   public void rotateobj()
24.      {
25.         Debug.Log(C1);
26.       }
27. }

Gameobject C1 is empty in rotateobj(). Why?

 

Maybe Debug.Log(C1.name) instead to see what C1 became in both conditionals. Give some sort of mark for each log to tell when and where you are seeing them; Debug.Log("1: " + C1.name).