unity3d - unity - 显示箭头上的模拟值

Question

当我在框中输入值 990 以使指针指向 970 时，如何修改代码？显示箭头上的模拟值

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;


public class barometer : MonoBehaviour {

    public float maxValue = 0.0f; 
    public float minArrowAngle;
    public float maxArrowAngle;
    public RectTransform arrow; // The arrow 
    public float value = 0.0f;
    public Text valueLabel;

    
    // Update is called once per frame
    void Update () {
    

 if (valueLabel != null)
  valueLabel.text = ((int)value) + " hPa";
            
  if (arrow != null)
 arrow.localEulerAngles = new Vector3(0, 0, Mathf.Lerp(minArrowAngle, maxArrowAngle, value / maxValue));
  }
}