FPS Gun Fire and animation problems

Hi guys, i'm making a script to make my guy shoot and have reload animations etc. The problem is my reload animations will not play. Another problem is when my guy reloads his clips do not go down, and one more problem is that his gun still shoots while firing. If anyone has some help please do help. Thanks Here's the script:

 ict
 
 var Range : float = 1000;
 var Force : float = 1000;
 var Clips : int = 5;
 var BulletPerClip : int = 30;
 var ReloadTime : float = 3.3;
 var BulletsLeft : int = 0;
 var ShootTimer : float = 0;
 var ShootCooler : float = 0.9;
 public var ShootAudio : AudioClip;
 public var ReloadAudio : AudioClip;
 
 function Start()
 {
 
     BulletsLeft = BulletPerClip;
 
 }
 
 function Update () 
 {
 
    if(ShootTimer < 0){
                    
                    ShootTimer = 0;
                   
                   }
                   
              if( KeyTimer == 0){
             if(Input.GetMouseButton(0) && BulletsLeft ){
             
             if( ShootTimer  == 0){
             
             PlayShootAudio();
             
              
                 RayShoot();
                  
                 
                    
                 ShootTimer  = ShootCooler;
                 KeyTimer = KeyCooler;
                 
     
 }
 }
 }
 
 function RayShoot (){
 
     GameObject.Find("M4A1 SOPMOD").animation.Play("Shoot");
 
     var Hit : RaycastHit;
                 
                 var direction : Vector3  = transform.TransformDirection(Vector3.forward);
     
     
     if (Physics.Raycast(transform.position , DirectionRay , Hit , Range))
     {
         if(Hit.rigidbody)
         {
         Hit.rigidbody.AddForceAtPosition(DirectionRay * Force , Hit.point);
     }
     }
     
                 BulletsLeft --;
                  
             
                 if(BulletsLeft < 0){
                 
                 BulletsLeft = 0;
                 
                 }
                 
                 if( BulletsLeft == 0 ){
                 
                 Reload();
                 
                 
                 
                 
                     }
                 }
 
 function Reload()
 {
     
         PlayReloadAudio();
     yield WaitForSeconds(ReloadTime);
                     GameObject.Find("M4A1 SOPMOD").animation.Play("Reload");
     
     
         if(Clips > 0)
         {
             BulletsLeft = BulletPerClip;
             
             Clips -= 1;       
         }
 
 }
 
 function PlayShootAudio(){
 
         audio.PlayOneShot( ShootAudio);
 
 }
 
 function PlayReloadAudio(){
 
   audio.PlayOneShot( ReloadAudio);
 }