hidden field populated but not trnsferred to confirm.php neither email(latters the same)

georgiosrafaelavilla.com/book.php
after get final price the
<input type="hidden" id="priceHidden" />
get populated
after submit form
$price=$_POST['priceHidden'];
of bookingprocessor.php run
but in confirmation.php
got "" for $price in other words nothing...

you can submit with name "test"...
well?