follow up
I placed the code at the top of the "display manager" page but still get the same message. Is there somewhere else I should place this code so that when the session variable is not sent, there will not be an error message. Below is the code I changed to. Thanks
<?php
// start session varible
if (!isset($_SESSION)) {
session_start();
}
?>
<?php
if(isset($_SESSION['mthCost']) && $_SESSION['mthCost'] != "") {
$mthCost = $_SESSION['mthCost'];}