Unable to filter a recordset using a session variable

I have a volunteer application page and when the volunteer presses <Submit> their info is saved in a MySQl db table and a session variable is created containing the primary key of their record in the table, control is then passed to a "success page". The success page can access the session variable (I proved this by displaying the session variable on the success page) so my next step was to create a recordset in the success page with a filter using the session variable to select the appropriate row in the table, allowing me to display to the volunteer the info they submitted.

I set up a test success page which displays the session variable and one field of the volunteer info. When I test this I see the session variable displayed but the corresponding volunteer info field from the recordset is not displayed.

The volunteer application page is here www.hollisterairshow.com/volunteerapp.php and the successpage is here www.hollisterairshow.com/thanksvol.php

The code that creates the session variable in the volunteer application page is shown below

$_SESSION['volunteer_id'] = mysql_insert_id();

The code to display the session variable in the success page is shown below

<?php  echo $_SESSION['volunteer_id']; ?>

The code to display the volunteer info is shown below

<h1> Thank You <?php echo $row_rsVolunteerApp['firstname']; ?>!! </h1>

The recordset definition is shown below

The success page test result is shown below, as you can see the volunteer's first name is not displayed immediately after the "Thank you" message but the session variable holding the correct primary key (41) is shown correctly.

Does anyone have an idea of what I'm doing wrong?

Thanks

Tony