Read Stamina on GKC and update HUD

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UIHealthAlchemy;

public class BottleStamina : MonoBehaviour
{
    private MaterialHealhBar guiBar;

    private staminaSystem staminaSys;               // Stamina component, used to use and refill Stamina (didn't have a MaxValue)
    private playerStatsSystem statsSys;             // For that reason we need to gain access to the another component.
    private playerStatsSystem.statInfo staminaInfo; // Which contain an array and we need to search for what we need from all StatsInfo that the array contains!
    private float currentStamina;
    private float maxStamina;   // This is used for UIHealthAlchemy which works between 0 and 1

    private float oldValue = 0;
    // Start is called before the first frame update
    void Start()
    {
        guiBar = GetComponent<MaterialHealhBar>();

        if (!transform.root.GetComponentInChildren<playerStatsSystem>())
        {
            Debug.LogError("*** MISSING PLAYER STATS SYSTEM ON CHARACTER ***");
            return;
        }
        if (!transform.root.GetComponentInChildren<staminaSystem>())
        {
            Debug.LogError("*** MISSING STAMINA SYSTEM ON CHARACTER ***");
            return;
        }

        statsSys = transform.root.GetComponentInChildren<playerStatsSystem>();  // This is the Component that have all stats, it's an array
        staminaSys = transform.root.GetComponentInChildren<staminaSystem>();
        findStamina();  // this is used to find the Stamina Value from the array of StatInfo array inside the PlayerStatsSystem component
        maxStamina = staminaInfo.currentValue;
        currentStamina = staminaSys.staminaAmount;
        oldValue = currentStamina;
        UpdateUI();
    }

    private void FixedUpdate()
    {
        if (oldValue != staminaSys.staminaAmount)
            UpdateUI();
    }

    public void UpdateUI()
    {
        // Debug.Log(currentStamina +"/"+ maxStamina);
        currentStamina = staminaSys.staminaAmount;
        guiBar.Value = currentStamina / maxStamina; // So we have value with a range 0 to 1

        oldValue = currentStamina;
    }


    private void findStamina()
    {
        for (int i = 0; i < statsSys.statInfoList.Count; i++)
        {
            if (statsSys.statInfoList[i].Name == "Stamina")
                staminaInfo = statsSys.statInfoList[i];
        }
    }
}