Использование таймера в Unity

public Text woodtext;
public Timer woodt = new Timer();
    public void wood()
    {
        woodt.Enabled = true;
        woodt.Interval = 4000;
        tree++;
        woodtext.text = Convert.ToString(tree);
    }

public void Invoke(string methodName, float time);

using UnityEngine;
using System.Collections.Generic;
 
public class ExampleScript : MonoBehaviour
{
    // Launches a projectile in 2 seconds
 
    Rigidbody projectile;
 
    void Start()
    {
        Invoke("LaunchProjectile", 2);
    }
 
    void LaunchProjectile()
    {
        Rigidbody instance = Instantiate(projectile);
        instance.velocity = Random.insideUnitSphere * 5;
    }
}

public void InvokeRepeating(string methodName, float time, float repeatRate);

using UnityEngine;
using System.Collections.Generic;
 
// Starting in 2 seconds.
// a projectile will be launched every 0.3 seconds
 
public class ExampleScript : MonoBehaviour
{
    public Rigidbody projectile;
 
    void Start()
    {
        InvokeRepeating("LaunchProjectile", 2.0f, 0.3f);
    }
 
    void LaunchProjectile()
    {
        Rigidbody instance = Instantiate(projectile);
 
        instance.velocity = Random.insideUnitSphere * 5;
    }
}

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour
{
    IEnumerator WaitAndPrint()
    {
        // suspend execution for 5 seconds
        yield return new WaitForSeconds(5);
        print("WaitAndPrint " + Time.time);
    }
 
    IEnumerator Start()
    {
        print("Starting " + Time.time);
 
        // Start function WaitAndPrint as a coroutine
        yield return StartCoroutine("WaitAndPrint");
        print("Done " + Time.time);
    }
}