Unity guidance system. Click the target object and prompt the text to change color to enter the next step

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

/*
 *  The script uses the text color to determine whether the goal is achieved 
 *  Format fixed two lines 
 * 
 */
public class Test : MonoBehaviour
{
    [Tooltip(" sound recording ")]
    public Button RecodePen;

    // Change the rotation state of the switch 
    public int _SwitchChangerStep;
    [Header(" Here are the words that need to change color ")]
    public Text text1, text2;


    #region  Prompt column text list 
    static string[] t1 = new string[] {
    " Click the record button ",
    " Click the record button ",
    " Click the record button "
    };
    static string[] t2 = new string[]
    {
     " Click on A",
     " Click on B",
     " Click on C"
    };
    [Header(" The target object that needs to be clicked ")]
    public GameObject[] TargetGameobject = new GameObject[t1.Length];
    #endregion
    public int step;
    [Header(" Record button ")]
    public Button RecodeSubmit;// At that time, every link of the project should be recorded . You can remove this when making other requirements 


    private void OnEnable()
    {

        TargetGameobject[step].SetActive(true);
        Debug.Log(string.Format("<color=yellow>{0}</color>", $"{System.Reflection.MethodBase.GetCurrentMethod().ReflectedType.FullName} The script to start ") + "\n This script detects the target ");
        RecodeSubmit.onClick.AddListener(() => {
            RecodePen.interactable = false;
            text1.color = Color.green;
        });
    }
    private void Awake()
    {

        if (t1.Length != t2.Length) Debug.LogError(" The words fail to correspond one by one !");        // initialization 
        text1.color = Color.white;
        text2.color = Color.white;
    }
    void Update()
    {
        if (step < t1.Length)
        {
            text1.text = t1[step];
            text2.text = t2[step];

        }
        else
        {
            text1.text = null; text2.text = null;
            enabled = false;// The work of this script is over , initialization 
        }
        if (text1.color == Color.green && text2.color == Color.green)
        {
            text1.color = Color.white; text2.color = Color.white; RecodePen.interactable = true;
            step++; 
            TargetGameobject[step].SetActive(true);
            RecodeSubmit.onClick.AddListener(() => {
                text1.color = Color.green;
            });

        }


        // Target detection , Discoloration of words 
        if (Input.GetMouseButtonDown(0))
        {

            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit raycastHit;

            Physics.Raycast(ray, out raycastHit, 2000);
            Debug.Log(raycastHit.transform.name);
            // At that time, highlight was used to confirm the target object 
            // If you don't highlight , As the corresponding Targetgameobject[] Go to 
            if (raycastHit.transform.gameObject.activeInHierarchy && raycastHit.transform.gameObject.GetComponent<Highlighter>().enabled)
            {
                raycastHit.transform.gameObject.SetActive(false);
                text2.color = Color.green;
            }
        }
    }
}

Realization effect ：