Play only selected video

I have 5 cubes in a scene, and 1 different video attached to each one. I want to play only video 1 on cube 1 when cube 1 is clicked, video 2 on cube 2 when cube 2 is clicked and so on.

I have tryed the folowing code, but when I click on any place inside my scene all the videos start to play at the same time, how can I tell to play only the video attached to the clicked cube?

Thanks in advance for any help!

 using UnityEngine;
 using System.Collections;
 
 [RequireComponent(typeof(AudioSource))]
 
 public class PlaySelected : MonoBehaviour
 {
 
     public MovieTexture movie;
 
     // Use this for initialization
 
     void Update()
     {
         if (Input.GetMouseButtonDown(0))
         {
             GetComponent<Renderer>().material.mainTexture = movie;
             if (movie.isPlaying)
             {
                 movie.Stop();
             }
             else
             {
                 movie.Play();
             }
         }
     }
 }