Why is the script for bledshapes not working in Unitu?

Question

C++ / C#

Good afternoon! I have a problem in unity. I need to make it so that in unity, when the button is pressed, blendshapes (face parameters) change. There is a model of a person in Unity and you need to make it so that when the button is pressed, blendshapes works for me, I have it Open.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
using UnityEngine.UI;
 
public class NewBehaviourScript4 : MonoBehaviour {
 
SkinnedMeshRenderer skinnedMeshRenderer;
Mesh skinnedMesh;
int Open = 500;
int blendSpeed = 100;
bool eyesClosed = false;
 
 
public void Start()
    {
skinnedMeshRenderer = GetComponent<SkinnedMeshRenderer>();
 
skinnedMesh = GetComponent<SkinnedMeshRenderer> ().sharedMesh;
    }
 
 
public void Update ()
    {
 
    //(float Open = 0f; Open < 100f; Open++)
        if (Open !=0 )
{
            skinnedMeshRenderer.SetBlendShapeWeight (100,Open);

//skinnedMeshRenderer.updateWhenOffscreen = true;
            //Debug.Log ("BlendShape value" + skinnedMeshRenderer.GetBlendShapeWeight (100));
 
            }
    }
 }

What am I doing wrong? Why doesn't it call bkendshapes? Please tell me who knows.
I need to use the Change button to

change the Open value to 100

Open is in BlendShapes

How else can I access BlendShapes through a script?

Answer 1

Try to address through a point.
skinnedMesh.BlendShapes.open or skinnedMesh.BlendShapes.Open
I don't know myself, but as an option.