Не могу решить ошибку в Unity

Gamedev и графика Unity
#1 
using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.UI;

public class Shield : MonoBehaviour

{

   public float cooldown;

   [HideInInspector]public bool isCooldown;

   private Image shieldImage;

   private Player player;

   

   void Start()

   {

       shieldImage = GetComponent<Image>();

       player = GameObject.FindGameObjectWithTag("Player").GetComponent<Player>();

       isCooldown = true;

   }

   void Update()

   {

       if (isCooldown)

       {

           shieldImage.fillAmonunt -= 1 / cooldown * Time.deltaTime;

           if(shieldImage.fillAmonunt < 0)

           {

               shieldImage.fillAmonunt = 1;

               isCooldown = false;

               player.shield.SetActive(false);

               gameObject.SetActive(false);

           }

       }

   }

   public void Resettimer()

   {

       shieldImage.fillAmonunt = 1;

   }

}

Сама ошибка:

Assets\Sripts\Shield.cs(26,24): error CS1061: ‘Image’ does not contain a definition for ‘fillAmonunt’ and no accessible extension method ‘fillAmonunt’ accepting a first argument of type ‘Image’ could be found (are you missing a using directive or an assembly reference?)

#2

буква лишняя.