Dynamic animator(2D) array Unity4.3

Hello !

I'm working on a project with unity 4.3, I work with the 2d module and i'm coding with C#. I want to create a class which contains some animations generated by the module Animator of Unity, and I want play one of these. I have a class which contains a public array of RuntimeAnimatorController, I create an Animator for each RuntimeAnimatorController in the array.

 public class CreateATrap : MonoBehaviour {
 
     public Sprite[] trapSprite;
     public RuntimeAnimatorController[] trapAnimation;
     private Animator[] trapAnimator;
     private Sprite CurSprite;
     private Animator CurAnimation;
     private SpriteRenderer myRenderer;
     private bool timeStarted = false;
     private float timer = 0;
     private float maxTimer = 0;
     private int currText;
     // Use this for initialization
     void Start () {
         int i = 0;
         myRenderer = gameObject.GetComponent<SpriteRenderer>();
         trapAnimator = new Animator[trapAnimation.Length];
 
         foreach (Animator element in trapAnimator)
         {
           
             element.runtimeAnimatorController = new RuntimeAnimatorController();
             element.runtimeAnimatorController = trapAnimation[i];
             ++i;
         }
         
     }
 }

I have some trouble to apply my method, Unity doesn't like this. And I don't even know if I can do something like this ...

Thank you in advance for your help