How do you move a character using a slider?

I trying to move a simple character using a slider but with what i have now I can move it using the keys and all forward momentum is automatic.

When the section for the slider is active it moves the player forward. as much as the slider is set for.

here is the code so far:

public class PlayerMotor : MonoBehaviour {

1. private CharacterController charController;
2. private Vector3 moveVector;
3. public float forwardSpeed = 5.0f;
4. public float leftRightSpeed = 5.0f;
5. public GameObject Player;
6. // Start is called before the first frame update
7. public void Start()
8. {
9. charController = GetComponent<CharacterController>();
10. }
11. // Update is called once per frame
12. public void Update(float leftRightSpeed) //addition
13. {
14. MovePlayer();
15. }
16. // This moves the player side to side using the arrow keys
17. public void MovePlayer() //addtion
18. {
19. moveVector = Vector3.zero;
20. moveVector.x = Input.GetAxisRaw("Horizontal") * leftRightSpeed; //left-right
21. moveVector.z = forwardSpeed; //forward
22. charController.Move(moveVector * Time.deltaTime);
23. }
24. // This moves the play with the slider. it's meant to be side to side but it moves it forwards
25. public void MovePlayer() //addtion
26. {
27. Vector3 pos = Player.transform.position; //addtion
28. pos.x = leftRightSpeed; //addtion
29. Player.transform.position = pos; //addtion
30. Debug.Log("moving sideways");
31. moveVector.z = forwardSpeed; //forward
32. Debug.Log("moving forward");
33. charController.Move(moveVector * Time.deltaTime);
34. }

}

Any suggestions as to how to resolve this?