Code not working?

The guy in the video made it look easy and I'm pretty sure I did it all right but when I press W A S D or any of the arrow keys nothing happens (I did hit play). Anyone know why?


using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour
{
void FixedUpdate ()
{
float moveHorizontal = Input.GetAxis ("Horizontal");
float moveVertical = Input.GetAxis ("Vertical");

Vector3 movement = new Vector3(moveHorizontal, 0.0F, moveVertical);

rigidbody.AddForce(movement);
}
}

 

Is the script attached to that object ?
Or are there any errors in the console?

Which video it is?