Public variable not showing up in menu?

Question

Unity

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class Main : MonoBehaviour
{
    public Ship controls;
    private void Awake() 
    {
        controls.MovinNshootin.Move.performed += _ => Move();
    }
    void Move ()
    {
        Debug.Log("Moved");
    }
}

And where?
Ship type, if anything, this is
In the new input system

Answer 1

Ship must inherit from MonoBehaviour.