Unity タイマー

c# Scondstimer.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using TMPro;
using UnityEngine.UI;

public class StudyTime : MonoBehaviour
{
    public GameObject timerText;
    private float time=0.0f;
    private int minute=0;

    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        this.time += Time.deltaTime;
        if(this.time<10.0f)
        {
            this.timerText.GetComponent<TextMeshProUGUI>().text =this.time.ToString("F1");

        }
        else
        {
            this.time=10.0f;
            this.timerText.GetComponent<TextMeshProUGUI>().text =this.time.ToString("F1");
            if (Input.GetKeyDown(KeyCode.Return))
            {
                SceneManager.LoadScene("Sccess");
            
            }
        }
    }
}