Jump Animatoin clip error

Hello guys, i've been trying to make a 3rd person game animations are controlled by a script.

Run and Idle works fine but when i use jump animation, the clip doesn't run completely. It runs until i release the space bar and then goes back to idle. here is the script i am using for 3rd person controller.

 using UnityEngine;
 using System.Collections;
 
 public class CharacterController : MonoBehaviour {
 
     public Animator animator;
 
 
 
     [System.Serializable]
     public class MoveSettings
     {
         public float forwardVel = 9;
         public float rotateVel= 80;
         public float jumpVel =25; 
         public float distToGrounded =0.1f;
         public LayerMask ground;
 
     }
 
     [System.Serializable]
     public class PhySettings
     {
         
         public float downAccel=0.75f;
         
     }
 
 
     [System.Serializable]
     public class InputSettings
     {
         
         public float inputDelay = 0.1f;
         public string FORWARD_AXIS= "Vertical";
         public string TURN_AXIS= "Horizontal";
         public string JUMP_AXIS= "Jump";
         
     }
 
     public MoveSettings moveSetting = new MoveSettings ();
     public PhySettings phySetting = new PhySettings ();
     public InputSettings inputSetting = new InputSettings ();
 
 
     Vector3 velocity= Vector3.zero;
     Quaternion targetRotation;
     Rigidbody rBody;
 
     float forwardInput, turnInput, jumpInput;
 
     public Quaternion TargetRotation{
 
         get {return targetRotation;}
     }
 
     bool Grounded ()
     {
         return Physics.Raycast (transform.position, Vector3.down, moveSetting.distToGrounded, moveSetting.ground);
 
     }
 
 
     // Use this for initialization
     void Start () {
 
         //ANIMACIONES
         animator = GetComponent<Animator>();                            
         //FIN ANIMACIONES
 
         targetRotation = transform.rotation;
         if (GetComponent<Rigidbody> ()) {
             rBody = GetComponent<Rigidbody> ();
         } else {
             Debug.LogError("NECESITA UN RIGIDBODY EL PERSONAJE.");
         }
 
         forwardInput = turnInput = jumpInput = 0;
 
 
 
     }
 
     void GetInput()
     {
 
         forwardInput = Input.GetAxis (inputSetting.FORWARD_AXIS);
         turnInput = Input.GetAxis (inputSetting.TURN_AXIS);
         jumpInput = Input.GetAxisRaw (inputSetting.JUMP_AXIS);
     
 
     }
 
     // Update is called once per frame
     void Update () {
         GetInput ();
         Turn ();
 
 
     }
 
     
 
     void FixedUpdate()    {
 
         animator.SetFloat ("Run", forwardInput);
         animator.SetFloat ("Jump", jumpInput);
         Run ();
         Jump ();
         rBody.velocity = transform.TransformDirection (velocity);
     
     }
 
     void Run(){
         if (Mathf.Abs (forwardInput) > inputSetting.inputDelay) {
             //..move
 
             velocity.z = moveSetting.forwardVel*forwardInput;
 
 
                     
         } else {
         // ZERO-Velociddad.
             velocity.z=0;
                 }
 
     }
 
     void Turn(){
     if(Mathf.Abs(turnInput)>inputSetting.inputDelay){
             targetRotation*=Quaternion.AngleAxis(moveSetting.rotateVel*turnInput*Time.deltaTime, Vector3.up);
 
         }
         transform.rotation = targetRotation;
     }
 
     void Jump()    {
         if (jumpInput > 0 && Grounded ()) {
 
             // JUMP
 
             velocity.y=moveSetting.jumpVel;
         
         } else if (jumpInput == 0 && Grounded ()) {
             //ZERO OUT OUR VELOCITY.Y
             velocity.y=0;
 
 
         } else
         {
 
         //DECRASE VELOCITY.Y
 
             velocity.y-=phySetting.downAccel;
         
         }
 
     }
 
 
 
 }