Server Validation for checkbox

I have a checkbox named tour_name within a repeat region(produces several checkboxes) and the checked value is
<?php echo $row_rs_pricing['tour_name']; ?>

I want to use validation toolkit to server validate that at least 1 checkbox is checked.
Using required/not blank produced this code---

<?php
if (($_SERVER["REQUEST_METHOD"] == "POST") && (isset($_SERVER["HTTP_REFERER"]) && strpos($_SERVER["HTTP_REFERER"], $_SERVER["SERVER_NAME"].$_SERVER["PHP_SELF"]) > 0) && isset($_POST)) {
$WAFV_Redirect = "";
$_SESSION['WAVT_camptelregistration_Errors'] = "";
if ($WAFV_Redirect == "") {
$WAFV_Redirect = $_SERVER["PHP_SELF"];
}
$WAFV_Errors = "";
$WAFV_Errors .= WAValidateRQ(((isset($_POST["tour_name"]))?$_POST["tour_name"]:"") . "",true,1);

if ($WAFV_Errors != "") {
PostResult($WAFV_Redirect,$WAFV_Errors,"camptelregistration");
}
}
?>

This did not work; I tested and did not check any box name="tour_name" but the page submitted?

thanks for your help,
Jim Balthrop

Please send a copy of your page so I can see the code in context. that validation code looks correct, I will need to see how the form is created and where on the page the validation code is placed.

thanks Jason

attached is page in question

The action of the form is set to post to another page:
<form action="checkout.php"


the server validation server behavior needs to be on the forms action page. you need to apply the Server Validation server behavior to the checkout.php page.

Jason,

I hope you get a HUGE Christmas bonus! You deserve it.

thanks again, that worked perfectly.
I had never validated on a different page than the page with the form.
I don't use the form action much(usually have UE or insert do the redirect), but found that in order to get the form POST info on the checkout page, it had to have the form action take it to that page.
Anyway, I may end up having to use eCart on this domain as i can't get PayPal ecommerce to do exactly what i want.

Happy Holidays,
Jim Balthrop