rabidus-test/Assets/DisableAfterFinish.cs

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

public class DisableAfterFinish : MonoBehaviour
{
    private DisableAfterFinishController disableController;
    [SerializeField] private GameObject _target;

    public bool DisableState = false;


    private void Awake()
    {
        disableController = FindObjectOfType<DisableAfterFinishController>();
    }

    private void OnEnable()
    {
        disableController.DoDisable += Disable;
    }

    private void OnDisable()
    {
        disableController.DoDisable -= Disable;
    }

    private void Disable()
    {
        if (_target == null)
            gameObject.SetActive(DisableState);
        else
            _target.SetActive(DisableState);
    }
}