getting an error on my admob script?

I’m trying to put admob on my game but I keep getting this error:

error CS1501: No overload for method CreateBanner' takes 3’ arguments

Here’s my code:

private AdMobPlugin admob;

public bool hidden = true;

public void Awake()
{
	DontDestroyOnLoad(this);
}

// Use this for initialization
void Start () {
	admob = GetComponent<AdMobPlugin>();
	admob.CreateBanner(AD_UNIT_ID, AdMobPlugin.AdSize.SMART_BANNER, false);
	admob.RequestAd();
	admob.HideBanner();

}

// Update is called once per frame
void Update () {
	if(hidden)
	{
		admob.HideBanner();
		hidden = false;
	}
}

I followed this tutorial to the letter but I can’t seem to make it work. Can anyone help me?

nvm, I just changed the creat banner line to this:
admob.CreateBanner(AD_UNIT_ID, AdMobPlugin.AdSize.SMART_BANNER, false, “”, false);

Sorry for the hassle