(Unity)オブジェクトの大きさを自動的に変化させる(localScale)

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

public class Scale : MonoBehaviour {

    private float s = 0.01f;

	void Update () {
        Vector3 currentScale = transform.localScale;

        if(currentScale.x > 3.0f || currentScale.x < 0.1f)
        {
            s *= -1;
        }

        currentScale.x += s;
        currentScale.y += s;
        currentScale.z += s;

        transform.localScale = currentScale;
	}
}