Footsteps Java Script Problems

Basically I'm creating a virtual reality where I want to make a footstep sound on selective planes, but I'm having problems with my coding, I keep getting error messages when trying to open it in Unity. Also when I'm trying to choose my audio files via audio.clip=BleepSound; it's not coming up as something I can select to attach the audio clip to it, if that makes any sense. I've attached a screenshot of the javascript and the error messages. Any help would be really great. Thanks.

 var AudioTimer : float = 0;
 
 var BleepSound: AudioClip;
 
 function Update () {
 
    if (AudioTimer > 0) {
    
    AudioTimer -= Time.deltaTime;
    
    }
    
    
    if ( AudioTimer < 0){
    
    AudioTimer = 0;
    }
 
 
 
 }
 
 
 function OnControllerColliderHit (col: ControllerColliderHit){
 
    if (col.gameObject.CompareTag("Bleep") && Input.GetAxis)("Vertical") && AudioTimer == 0 || 
     Input.GetAxis("Horizontal") && AudioTimer == 0 ){
     
      audio.clip = BleepSound;
      audio.PlayOneShot(BleepSound);
      AudioTimer = 0.4;
     
     }
     
 }