Counting down with a game manager

Hello,

I am trying to get my Game manager to count down when you use a Key on a chest. The problem I am having is I pick up the Key and the UI still states I have 0 Keys. Then when I use the key on the chest it will say I have 1 key even though the key has already been used. Below is a segment of the code I am having trouble with. As well as my game manager script


if (collision.gameObject.tag == "BChest" && GameManager.Instance.BronzeK >0)
{
Bronze.text = GameManager.Instance.BronzeK--.ToString();

CoinText.text = GameManager.Instance.CCount++.ToString();
}

--------------------------------------------------------------------------------------------------------------------------------------------

public class GameManager: MonoBehaviour
{
public static GameManager Instance { get; private set; }

public int CCount;
public int CollCount;
public int BronzeK;
public int SilverK;
public int GoldK;
public int WraithK;
public int Mkills;









private void Awake()
{
if (Instance == null)
{
Instance = this;
DontDestroyOnLoad(gameObject);
}
else
{
Destroy(gameObject);
}

 

The issue has been resolved I found a different method that works much better.