trouble with de-bugging

hi every one
i do not understand what is wrong with my script as it is exactly the same as unity’s tutorial’s one
plz help:

Assets/scripts/PlayerMovement.cs(13,27): error CS0120: An object reference is required to access non-static member `UnityEngine.Rigidbody.AddForce(UnityEngine.Vector3, UnityEngine.ForceMode)’

thanks Evenus1

You need to reference the rigid body you want to move.

here is my script:

using UnityEngine;
using System.Collections;

public class PlayerMovement : MonoBehaviour
{
void FixedUpdate()
{
float moveHorizontal = Input.GetAxis (“Horizontal”);
float moveVertical=Input.GetAxis(“Vertical”);

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

Rigidbody.AddForce(movement);
}

}
could u plz tell me which bit to change

plz help me

You need to store a reference to the rigid body , or the game object its on (and then use get component).

Like the example in the docs

this is still very confusing. and i have followed a tutorial that i watched work made by unity so why is it not right.

Just adjust your code to reference the rigid body on the object, as demonstrated in the example I linked.

Again with this…

Your code does not match the tutorial - Help with c# scripting, very simple - Unity Engine - Unity Discussions

i don’t get it as i don’t get c#

thank you all i now understand