Button UI set active from script

Hello I have a question about ui buttons. If I want to turn the interatible boolean on the button to on or off throught a script how do I do so? Thanks

http://docs.unity3d.com/ScriptReference/UI.Selectable-interactable.html

using System.Collections;
using UnityEngine;
using UnityEngine.UI;

public class ScriptExample : MonoBehaviour{
    public Button ButtonExample;

    void Start(){
        ButtonExample.interactible = true;
        //ButtonExample.interactible = false;
    }
}