I am doing the roll a ball project and I am typing in rb.AddForce and it says that rb is unexpected. I put my program below so if anyone has an answer please let me know

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

private Rigidbody rb;

void Start ()
{
	rb = GetComponent<Rigidbody> ();
}

void FixedUpdate ()
{
	float moveHorizontal = Input.GetAxis ("Horiaontal");
	float moveVertical = Input.GetAxis ("Vertical");

	Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical)

	rb.AddForce (Vector3);

}

}

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {
	
	private Rigidbody rb;
	
	void Start ()
	{
		rb = GetComponent<Rigidbody> ();
	}
	
	void FixedUpdate ()
	{
		float moveHorizontal = Input.GetAxis ("Horiaontal");
		float moveVertical = Input.GetAxis ("Vertical");
		Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
		rb.AddForce (movement);
	}
}