BCE0043 unexpected token! pls help.

private var ray : Ray;
private var rayCastHit : RaycastHit;

function Update()
{
if(Input.GetMouseButton(0))
{
ray= Camera.main.ScreenPointToRay(Input.mousePosition);

if (Physics.Raycast(ray.rayCastHit)){
transform.position.x=rayCastHit.point.x;
}
}
}
by the way i got this code from youtube tutorial making a ping pong game. But i have this error at line 13 and 14. please help why is this wrong but in his tutorial this is correct.

Stop trying to write code in Office or other word processors. Use a simple text editor or specific code editing tool.