[Unity] TextMesh에 카운트 표시

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class MeasureTime : MonoBehaviour {
GameObject time;
int timeLimit;
float deltaTime;
int intNowTime;
string strNowTime;
// Use this for initialization
void Start () {
    Debug.Log(":::::START:::::");
    time = GameObject.Find("Time");   // 時間計測用GameObjectの取得
    timeLimit = 10;   // 制限時間
}
// Update is called once per frame
void Update () {
    deltaTime += Time.deltaTime;   // 経過時間
    intNowTime = (int)deltaTime;   // 経過時間の整数部分
    timeLimit = timeLimit - intNowTime;   // 実際の秒数
    strNowTime = intNowTime.ToString();   // TextMeshのGameObjectに代入するためにString型にする
    time.GetComponent<TextMesh> ().text = strNowTime;
    // 制限時間経過時の設定
    if(intNowTime > 10){
        time.GetComponent<TextMesh> ().text = ":::::FINISH:::::";
    }
}
}