Пишет The name 'lastX' does not exist in the current context подскажите пжл что делать.ЮНИТИ

Пишет The name 'lastX' does not exist in the current context подскажите пжл что делать
вот сам скрипт:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraControl : MonoBehaviour
{
public float dumping = 1.5f;
public Vector2 offset = new Vector2(2f, 1f);
public bool isLeft;

private Transform player;
private int last;

[SerializeField]
float leftlimit;
[SerializeField]
float rightLimit;
[SerializeField]
float bottomLimit;
[SerializeField]
float upperLimit;

void Start()
{
offset = new Vector2(Mathf.Abs(offset.x), offset.y);
FindPlayer(isLeft);
}

public void FindPlayer(bool playerIsLeft)
{
player = GameObject.FindGameObjectWithTag("Player").transform;
lastX = Mathf.RoundToInt(player.position.x);
if (playerIsLeft)
{
transform.position = new Vector3(player.position.x - offset.x, player.position.y - offset.y, transform.position.z);
}
else
{
transform.position = new Vector3(player.position.x + offset.x, player.position.y + offset.y, transform.position.z);
}
}

void Update ()
{
if (player)
{
int currentX = Mathf.RoundToInt(player.position.x);
if (currentX > lastX) isLeft = false; else if (currentX < lastX) isLeft = true;
lastX = Mathf.RoundToInt(player.position.x);

Vector3 target;
if (isLeft)
{
target = new Vector3(player.position.x - offset.x, player.position.y + offset.y, transform.position.z);
}
else
{
target = new Vector3(player.position.x + offset.x, player.position.y + offset.y, transform.position.z);
}


Vector3 currentPosition = Vector3.Lerp(transform.position, target, dumping * Time.deltaTime);
transform.position = currentPosition;

}

transform.position = new Vector3
(
Mathf.Clamp(transform.position.x, leftlimit, rightLimit),
Mathf.Clamp(transform.position.y, bottomLimit, upperLimit),
transform.position.z

);
}
}

 private int last; 

 private int lastX;