Paypal_lib Success Page Problem

[eluser]Jesse Schutt[/eluser]
Hey guys,

How do I grab one of the values in the array? I have been using

Code:

Thank You <?php echo $_POST['first_name']; ?>

or

Code:

Thank You <?php echo $this->input->post('first_name'); ?>

but it is just returning "1" instead of the name of the purchaser.

Thanks in advance!