Server Validation Help Please

Hi - I'm struggling a little with my server validation on my form. It just won't seem to fail.

Basically, if my form field userid (checkbox) is empty, I want the validation to fail. The field is in a repeat region and is set up as an array.

I have tried:

<?php
if (isset($_POST["massupdatego"])) {
$WAFV_Redirect = "admin_Users_Results_Email.php?massemail=no";
$_SESSION['WAVT_adminUsersResultsEmail_146_Errors'] = "";
if ($WAFV_Redirect == "") {
$WAFV_Redirect = $_SERVER["PHP_SELF"];
}
$WAFV_Errors = "";
$WAFV_Errors .= WAValidateRQ(((isset($_POST["userid"]))?$_POST["userid"]:"") . "",true,1);

if ($WAFV_Errors != "") {
PostResult($WAFV_Redirect,$WAFV_Errors,"adminUsersResultsEmail_146");
}
}
?>

and I've also tried:

<?php
if (isset($_POST["massupdatego"])) {
$WAFV_Redirect = "admin_Users_Results_Email.php?massemail=no";
$_SESSION['WAVT_adminUsersResultsEmail_146_Errors'] = "";
if ($WAFV_Redirect == "") {
$WAFV_Redirect = $_SERVER["PHP_SELF"];
}
$WAFV_Errors = "";
$WAFV_Errors .= WAValidateRQ(((isset($_POST["userid[]"]))?$_POST["userid[]"]:"") . "",true,1);

if ($WAFV_Errors != "") {
PostResult($WAFV_Redirect,$WAFV_Errors,"adminUsersResultsEmail_146");
}
}
?>

But it never fails if I don't check any selections.

Any help would be really appreciated!
Thanks

send a copy of your page please so i can examine the code in context.

Thanks - attached is the file.

rule #1 when working with forms:
The Form data can only be processed on the forms action page.


the page you have sent is named "admin_Users_Results_Email.php". the action of the form with the userid checkbox is to post to a different page named "admin_Users_Mass_Email.php":

<form  action="admin_Users_Mass_Email.php" method="post" id="usermassemail" name="usermassemail">

when the form is submitted, the action page is loaded to receive the form data. you can only validate the form data on that page.

you will either need to move the validation code to the "admin_Users_Mass_Email.php" page, or change the action of the form to post to the "admin_Users_Results_Email.php" page instead.

Thanks Jason - thought it was something silly like that.

you're welcome.