Question The name 'birdIsAlive' does not exist in the current context

Hello I am new to unity and I am trying to make a flappy bird style game but I can not find how to creat a reference inbetween two scripts and I get this error code "The name 'birdIsAlive' does not exist in the current context" here are the scripts

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class birdScript : MonoBehaviour
{
public Rigidbody2D myRigidbody;
public float flapStrenght;
private LogicScripts logic;
public bool birdIsAlive = true;






// Start is called before the first frame update
void Start()
{
logic = GameObject.FindGameObjectWithTag("logic").GetComponent<LogicScripts>();
}

// Update is called once per frame
void Update()
{
if (Input.GetKeyDown(KeyCode.Space) == true && birdIsAlive == true)
{
myRigidbody.velocity = Vector2.up * flapStrenght;
}

if(transform.position.y > 19)
{
logic.gameOver();
birdIsAlive = false;
}
if(transform.position.y < -19)
{
logic.gameOver();
birdIsAlive = false;
}

}
private void OnCollisionEnter2D(Collision2D collision)
{
logic.gameOver();
birdIsAlive = false;
}
}




and here is the second one




using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PipeMiddleScript : MonoBehaviour
{

public LogicScripts logic;
public birdScript bird;


// Start is called before the first frame update
void Start()
{
logic = GameObject.FindGameObjectWithTag("logic").GetComponent<LogicScripts>();
bird = GameObject.Find("bird").GetComponent<birdScript>();
}



// Update is called once per frame
void Update()
{

}
private void OnTriggerEnter2D(Collider2D collision)
{
if (birdIsAlive = true)
{
logic.AddScore(1);

}






}
}





I am trying to fix a bug where If you pass in between the posts you get a point even if your dead
Thank you for your help

 

u need to do bird.birdIsAlive