Ajuda com a animação do pulo

Como Posso Fazer com que o Player Execute a animação de pular ao pressionar Espaço junto com as animações de parado, correndo, andando etc em uma  blend tree 

e esse e meu script: 

Código:

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour {

   public float walkSpeed = 2;
   public float runSpeed = 6;
   public float gravity = -12;
   public float jumpHeight = 1;
   [Range(0,1)]
   public float airControlPercent;

   public float turnSmoothTime = 0.2f;
   float turnSmoothVelocity;

   public float speedSmoothTime = 0.1f;
   float speedSmoothVelocity;
   float currentSpeed;
   float velocityY;

   Animator animator;
   Transform cameraT;
   CharacterController controller;

   void Start () {
      animator = GetComponent<Animator> ();
      cameraT = Camera.main.transform;
      controller = GetComponent<CharacterController> ();
   }

   void Update () {
      // input
      Vector2 input = new Vector2 (Input.GetAxisRaw ("Horizontal"), Input.GetAxisRaw ("Vertical"));
      Vector2 inputDir = input.normalized;
      bool running = Input.GetKey (KeyCode.LeftControl);

      Move (inputDir, running);

      if (Input.GetKeyDown (KeyCode.Space)) {
         Jump ();
      }
      // animator
      float animationSpeedPercent = ((running) ? currentSpeed / runSpeed : currentSpeed / walkSpeed * .5f);
      animator.SetFloat ("speedPercent", animationSpeedPercent, speedSmoothTime, Time.deltaTime);

   }

   void Move(Vector2 inputDir, bool running) {
      if (inputDir != Vector2.zero) {
         float targetRotation = Mathf.Atan2 (inputDir.x, inputDir.y) * Mathf.Rad2Deg + cameraT.eulerAngles.y;
         transform.eulerAngles = Vector3.up * Mathf.SmoothDampAngle(transform.eulerAngles.y, targetRotation, ref turnSmoothVelocity, GetModifiedSmoothTime(turnSmoothTime));
      }

      float targetSpeed = ((running) ? runSpeed : walkSpeed) * inputDir.magnitude;
      currentSpeed = Mathf.SmoothDamp (currentSpeed, targetSpeed, ref speedSmoothVelocity, GetModifiedSmoothTime(speedSmoothTime));

      velocityY += Time.deltaTime * gravity;
      Vector3 velocity = transform.forward * currentSpeed + Vector3.up * velocityY;

      controller.Move (velocity * Time.deltaTime);
      currentSpeed = new Vector2 (controller.velocity.x, controller.velocity.z).magnitude;

      if (controller.isGrounded) {
         velocityY = 0;
      }

   }

   void Jump() {
      if (controller.isGrounded) {
         float jumpVelocity = Mathf.Sqrt (-2 * gravity * jumpHeight);
         velocityY = jumpVelocity;
      }
   }

   float GetModifiedSmoothTime(float smoothTime) {
      if (controller.isGrounded) {
         return smoothTime;
      }

      if (airControlPercent == 0) {
         return float.MaxValue;
      }
      return smoothTime / airControlPercent;
   }
}

Amigo aprendi aqui nesses videos