Unity Ads - not recognizing "using UnityEngine.Advertisements;"

So I imported Unity Ads just now, but it doesn't autocomplete

using UnityEngine.Advertisements;

And whenI kept going

Advertisement.Initialize ("11111", true);

The Advertisement.Initialze appears in red.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using UnityEngine.Advertisements; //doesn't autocomplete
4.  
5. public class SimpleAds : MonoBehaviour {
6.  
7.     void Start () {
8.         Advertisement.Initialize ("11111", true); //<- and Advertisement.Initialize appears in red. Also doesn't autocomplete.
9.     }
10.  
11. }

 

Have you switched your platform to either Android or iOS?

 

Yes, all my build settings have been for android and it's definitely selected as my platform. It has the unity icon and "switch platform" is greyed out for it.

 

Nevermind, I just needed to restart Unity.