Initiate Animation

I have a ladder that I want to climb, I have a script and an animation designed to let me climb this but when I walk up to the ladder and collide with it nothing happens. This is my current script, is their anything else I can do to initiate the animation "Climbing Animation" once I come into contact with "Ladder Collider".

This is my current script:

 #pragma strict
 
 
 function Start () {
 
 }
 
 function Update () {
 
 }
 
 function OnCollisionEnter(info : Collision){
     if (info.gameObject.name=="Ladder Collider"){
     animation.Play ("Climbing");
     }
 }