switch between object in oculus rift.

Hi guys, im currently trying to figure out how to switch 3d object by triggering it with oculus rift controller.
Note that im completely noob/new in coding or whatsoever, but i found a tutorial on a youtube that done similar to this.

I copied his switch character script. Now i know i just have to link its trigger button to oculus controller.
im pretty sure its really easy but for a complete noob i cant figure it out how to link.

I figured i should add the input code in line 22.
If anyone can help, Thanks in advance.



Here are the codes:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class ToggleItem : MonoBehaviour
6. {
7.     // references to controlled game objects
8.     public GameObject avatar1, avatar2;
9.    
10.     // variable contain which avatar is on and active
11.     int whichAvatarIsOn = 1;
12.    
13.     // use this for initialization
14.     void Start () {
15.        
16.         // enable first avatar and disable another one
17.         avatar1.gameObject.SetActive (true);
18.         avatar2.gameObject.SetActive (false);
19.     }
20.    
21.     //public method to switch avatar by pressing ui button
22.     public void Switchavatar()
23.     {
24.         //Processing whichavatarIsOn variable
25.         switch (whichAvatarIsOn) {
26.        
27.         //if the first avatar is on
28.         case 1:
29.        
30.            // then the second avatar is on now
31.            whichAvatarIsOn = 2;
32.        
33.            // disable the first one and enable the second one
34.            avatar1.gameObject.SetActive (false);
35.            avatar2.gameObject.SetActive (true);
36.            break;
37.          
38.         //if the second avatar is on
39.         case 2:
40.        
41.            //then the first avatar is on now
42.            whichAvatarIsOn = 1;
43.          
44.            //disable the second one and enable the first one
45.            avatar1.gameObject.SetActive (true);
46.            avatar2.gameObject.SetActive (false);
47.            break;
48.          
49.         }
50.                
51.     }  
52. }