New to Unity and Design, need some help :(

using UnityEngine;
using System.Collections;

public class Click : MonoBehaviour {

public UnityEngine.UI.Text massDisplay;
public int mass = 0;
public int massperclick = 1;

void update() {
    massDisplay.text = "Mass: " + mass;

public void Clicked() {
    mass += massperclick;

So basically, I’m making an incremental game with an original theme that’s coming later. I’m following a tutorial on youtube, and my button does nothing. I’ve sat staring at my code, looked up other users’ posts, etc.

Some help would be great, thanks in advance!

Answer to Op is Capitalizing the ‘U’ in Update so should be

void Update(){