AnimationCompleteDelegate Problem

[Lami]

Hello!

I'm trying to sequence some animations but it doesn't work as I expect it.
The Problem is that animation 2 immediatly starts even if animation 1 has not finished.
Maybe I'm missing something, so here's the code:

function raise () {
   var thomb: tk2dAnimatedSprite = null;
   for (thomb in thombScatterIcons) {
      thomb.SetFrame(1);
      var anim:tk2dAnimatedSprite;
      anim = Instantiate(prefab_anim,Vector3(thomb.transform.position.x, thomb.transform.position.y, thomb.transform.position.z-0.1),Quaternion.identity);
      switch (Random.Range(1, 6)) {
         case 1:
                  anim.Play("plain_rise");
                  anim.animationCompleteDelegate = switchAnimToIdleMode(anim,1);
                  break;
            case 2:
                  anim.Play("pylon_rise");
                  anim.animationCompleteDelegate = switchAnimToIdleMode(anim,2);
                  break;
            case 3:
                  anim.Play("bucket_rise");
                  anim.animationCompleteDelegate = switchAnimToIdleMode(anim,3);
                  break;
            case 4:
                  anim.Play("football_rise");
                  anim.animationCompleteDelegate = switchAnimToIdleMode(anim,4);
                  break;
            case 5:
                  anim.Play("yeti_rise");
                  anim.animationCompleteDelegate = switchAnimToIdleMode(anim,5);
                  break;
       }
   }
}
function switchAnimToIdleMode(anim:tk2dAnimatedSprite,Id:int)
{
   switch (Id) {
         case 1:
                  anim.Play("plain_idle");
                  break;
            case 2:
                  anim.Play("pylon_idle");
                  break;
            case 3:
                  anim.Play("bucket_idle");
                  break;
            case 4:
                  anim.Play("football_idle");
                  break;
            case 5:
                  anim.Play("yeti_idle");
                  break;
    }
    return null;
}