My script wont work anymore after i change var Player : Transform; to var Player : GameObject;

So here's my script

var GhostWall : GameObject;
var IsBuilding = false;
var Player : Transform;
var ghostclone : GameObject;

function Update ()
{
if (!IsBuilding)
{
if (Input.GetKeyDown(KeyCode.P))
{

ghostclone = Instantiate(GhostWall, Player.position, Quaternion.identity);
IsBuilding = true;
}
}
else if (IsBuilding)
{
if (Input.GetKeyDown(KeyCode.P))
{
Destroy(ghostclone);
IsBuilding = false;
}
}
}

Yeah this script works fine. But after I change the var Player : Transform; to var Player : GameObject; it give me an error where is says NullReferenceException: Object reference not set to an instance of an object. tell me what should I do.And im open to any suggestion .

 

you need to re-assign the player object in the inspector
also note that you will need to change "Player.position" to "Player.transform.position"

 

yes .it does work hahaha .ive done a mistake at Player.position . haha .Thanks