creating 2d side scroller for android cant get my player to jump help skl project

im trying to get my player to jump once i tap the jump button i have used prefab touch pads ive tried various ways to get this to work i have now set a script on the texture of the button its self to respond to when the user taps for jump but my character does nothing. here's my jump script plz sum1 help i aint gt long left!

using UnityEngine; using System.Collections;

public class jump : MonoBehaviour { private float jumpTime = 0.0f; public float speed = 2f; public float jumpForce = 50f; public float maxJumpVelocity = 2f; public float minJumpDelay = 0.5f; public GUITexture targetTex; public Texture2D touchTex; public Texture2D normalTex; // Use this for initialization void Start () { targetTex.texture = touchTex; }

     // Update is called once per frame
     void Update ()
     {
         Touch touch;
         
         if(Input.touchCount > 0 )
         {
             touch = Input.touches[0];
             if(targetTex.HitTest(touch.position))
             {
             if (touch.phase == TouchPhase.Began) 
             {

             if(jumpTime > 0)
             {
                 jumpTime -= Time.deltaTime;
             
             if (touch.phase == TouchPhase.Began) 
                 
             {
                 rigidbody2D.AddForce(transform.up * jumpForce);
                 jumpTime = minJumpDelay;
             }

         }
         }
     }
 }
 }

}