HELP,Watched tutorial https://www.youtube.com/watch?v=Xnyb2f6Qqzg

I watched the tutorial live training for 2d character controller https://www.youtube.com/watch?v=Xnyb2f6Qqzg And i have troubles with vspeed It had stuck every time when i jump in 6 number My charater have Apply Root Motion Update Mode : normal Culling Mode : Always Animate

I am adding the video to help you understand what i mean)

https://www.youtube.com/watch?v=6ZzYMI6632U

using UnityEngine; using System.Collections;

public class PlayerControllerScript : MonoBehaviour { public float maxSpeed = 10f; bool facingRight = true;

 Animator Anim;

 bool grounded = false;
 public Transform groundCheck;
 float groundRadius = 0.2f;
 public LayerMask whatIsGround;
 public float jumpForce = 125f;

 void Start () {

     Anim = GetComponent<Animator> ();
 }

 void FixedUpdate () 
 {
     grounded = Physics2D.OverlapCircle (groundCheck.position, groundRadius, whatIsGround);

     Anim.SetBool ("Ground", grounded);

     Anim.SetFloat ("vSpeed", GetComponent<Rigidbody2D>().velocity.y);


     float move = Input.GetAxis ("Horizontal");

     Anim.SetFloat ("Speed", Mathf.Abs (move));

     GetComponent<Rigidbody2D>().velocity = new Vector2 (move * maxSpeed, GetComponent<Rigidbody2D>().velocity.y);

     if (move > 0 &&!facingRight)
         Flip ();
     else if (move < 0 && facingRight)
         Flip ();
 }

 void Update()
 {
     if(grounded && Input.GetKey ("space")) 

     {
         Anim.SetBool("Ground", false);
         GetComponent<Rigidbody2D>().AddForce(new Vector2(0, jumpForce));

     }

 }

 void Flip()
 {
     facingRight = !facingRight;
     Vector3 theScale = transform.localScale;
     theScale.x *= -1;
     transform.localScale = theScale;

 }

}