Modify Blend Shapes with a Slider

Hi, so I searched how to make BlendShapes with code using the two methods GetBlendShapewieight and setBlendShapeweight. I tried to attach the slider values to the blend shape value, but somehow it's not showing up. I made my Debug Log of the slider Value and the blendshapeweight value, and they both change to the values 0 to 100. Here is my code (it's very similiar as the documentation): (I'm Using 5.4 beta)

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class BlendShapeManager : MonoBehaviour {
 
 
     SkinnedMeshRenderer skinnedMeshRenderer;
     Mesh skinnedMesh;
 
 
 
     void Start () {
         skinnedMeshRenderer = GetComponent<SkinnedMeshRenderer> ();
         skinnedMesh = GetComponent<SkinnedMeshRenderer> ().sharedMesh;
     
     }
     
     // Update is called once per frame
     void Update () {
         
     }
     public void ChangeBlendShape(){
         
         GameObject slider1 =  GameObject.Find ("HUDCanvas/RightPanel/DetailPanel/Slider_Elf");
 
         if (slider1 != null) {
             
             float horizontalSliderPos = skinnedMeshRenderer.GetBlendShapeWeight (0);
             skinnedMeshRenderer.SetBlendShapeWeight (0, slider1.GetComponent<Slider>().value );
             skinnedMeshRenderer.updateWhenOffscreen = true;
             Debug.Log ("BlendShape value" + skinnedMeshRenderer.GetBlendShapeWeight (0));
             Debug.Log ("Slider value" + slider1.GetComponent<Slider>().value);
 
         }
         return;
     }
 }

The Blend shape must show elf ears but nothing happens, any clue?

Here is with a value of 100

And yes, I checked my BlendShapes were imported correctly http://i.imgur.com/cBk9h2R.png