How do I get my characters eyes to move with the rest of the animation when I press play?

I've made a little customization window for my character that allows you to change his eye type. I've also got an idle animation I made using the unity 2d animator. the animation plays fine when I press play on the animator, but when I go to play the game the animation for the eyes doesn't work.
code I used to swap eye sprites:

Code (CSharp):

1. public class ChangingAppearance :  MonoBehaviour
2.     {
3.  
4.         public SpriteRenderer part;
5.         public Sprite[] options;
6.         public int index;
7.  
8.         void Update()
9.         {
10.             for (int i = 0; i < options.Length; i++)
11.             {
12.                 if (i == index)
13.                 {
14.                     part.sprite = options[i];
15.                 }
16.             }
17.         }
18.  
19.  
20.         public void Swap()
21.         {
22.             if (index < options.Length - 1)
23.             {
24.                 index++;
25.             }
26.             else
27.             {
28.                 index = 0;
29.             }
30.         }
31.     }

Any help would be much appreciated.