Animation script gravity problem

Hi guys i have a problem with the Animation script I follow a tutorial to make a animation sistem and it's work fine but i have a big problem When i use the script for animation my character had like a different gravity , i can climb the mountain easy and when i jump it's not working ... Someone know how to fix that ? :) This is the animation script : using UnityEngine; using System.Collections;

 public class PlayerAnnimationSystem : MonoBehaviour {
     public Animator anim;
     public Rigidbody rbody;
 
     private float inputH;
     private float inputV;
 
     // Use this for initialization
     void Start () 
     {
         anim = GetComponent<Animator>();
         rbody = GetComponent<Rigidbody>();
     }
 
     // Update is called once per frame
     void Update ()
     {
         if (Input.GetKeyDown ("1")) {
             anim.Play ("Attack2", -1, 0f);
         }
         if (Input.GetKeyDown ("2")) {
             anim.Play ("Action", -1, 0f);
         }
             
 
         inputH = Input.GetAxis ("Horizontal");
         inputV = Input.GetAxis ("Vertical");
 
         anim.SetFloat ("inputH", inputH);
         anim.SetFloat ("inputV", inputV);
 
         float moveX = inputH*50f*Time.deltaTime;
         float moveZ = inputV*50f*Time.deltaTime;
 
         if (moveZ <= 0f) {
             moveX = 0f;
         }
 
         rbody.velocity = new Vector3(moveX,0f,moveZ);
     }
 }