Pickup and read a piece of paper

Hey guys I have been working on a game for Uni and I have been researching how to make a player pick up and read a piece of paper lying on the ground, I would like it if I could pick it up on mouse click, I saw a couple of decent already answered questions like this for example,

although that doesn’t seem to be working for me, any advice?

Thanks

Try using the MonoBehaviour.OnMouseUp callback. Make sure to assign a collider to the “paper” GameObject, and that it uses a layer different from “Ignore Raycast”.

using UnityEngine;
using System.Collections;

public class Example: MonoBehaviour {
    void OnMouseUp() {
        Debug.Log("Clicked on the object this script is attached to");
    }
}