Opening a door when a button object has something it it's collider.

I am making a game in Unity where I want a door to open when I press a button. My button is a cube and when any object with a collider comes in contact with the collider of the cube I want to door to open. I have a script in the door that executes the animation. I have a script in the cube I use to try to call the door object. I tried making the door a child of the cube and some other thing but I don't know how to connect the two. The door does have an animation associated with it. The following are my two classes. using UnityEngine; using System.Collections;

 public class Button : MonoBehaviour {
     GameObject[] slideDoor = GetComponentInChildren();
     private int count;
 
     void OnTriggerEnter(Collider other){
         count++;
     }
 
     void OnTriggerExit(Collider other){
                 if (count > 0) {
                         count--;
                 }
         }
 
     void Update(){
         if (count > 0) {
                         slideDoor [0].anim.setBool("Open", count > 0);
                 }
         }
 
 
 }

 using UnityEngine;
 using System.Collections;
 
 public class DoorAnimatio : MonoBehaviour{
     public AudioClip doorSwishClip;             // Clip to play when the doors open or close.
     
     private Animator anim;                      // Reference to the animator component.
 
     void Awake (){
         anim = GetComponent<Animator>();
     }
 
     void Update (){
                 // Change this to work with a button instead of count
                 //anim.SetBool(DoorBool, buttondown);
         
                 // If the door is opening or closing...
 
         }
     public void playAnim(){
         if(anim.IsInTransition(0) && !audio.isPlaying){
             // ... play the door swish audio clip.
             audio.clip = doorSwishClip;
             audio.Play();
         }
     }
 }