animation and sound on collide

Hi, I am trying to open a door with its sound when the player (first person controller) enters a box collider. I have a door object with a large box collider, with "is trigger" checked. I have a simple animation called "door_animation_1", created in Unity with Wrap mode set to Once, and attached to the door object. I have a sound called "door_open" attached to the door object, with all the checks unchecked (no mute, no bypass, no play on awake, no loop).

I have a script attached to the door object, to play the door animation, with the following code:

 var myAnimation : AnimationClip;
 function OnTriggerEnter(other : Collider){
     animation.clip = myAnimation;
         animation.Play();
 }

and a second script to play the sound, always attached to the door object, with the following code:

 var myClip : AudioClip;
 function OnTriggerEnter(other : Collider){
      audio.clip = myClip;
      audio.Play();
 }

Of course in the door object properties the play animation script properties have the "My Animation" variable set to "door_animation_1", and the play audio script properties have the "My Clip" variable set to "door_open".

When the player (FPC) enters the box collider, the door opens and disappears, and no audio plays.

Can anyone figure out what my mistakes are and how can I solve this simple task? Thank you!