AED/Assets/Scripts/Level1/Operate.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class Operate : MonoBehaviour
{
    Text text;
    public string str="";
    void Start()
    {
        text = GetComponent<Text>();
        transform.SetParent(GameObject.FindWithTag("Grid").transform);
    }

    private void Update()
    {
        text.text = str;
        transform.localScale = Vector3.one;
    }
}