UPDATE Problem

[Adam 552]

<?php 

// Connects to your Database 

mysql_connect("---", "---", "---") or die(mysql_error()); 

mysql_select_db("---") or die(mysql_error()); 



//This code runs if the form has been submitted

if (isset($_POST['submit'])) {


$result = mysql_query("SELECT army FROM users WHERE username = '$username'");
if (!$result) {
    echo 'Could not run query: ' . mysql_error();
    exit;
}
$bob = mysql_fetch_row($result);


// now we insert it into the database
$insert = "UPDATE users SET army=('".$_POST['army']."') WHERE army = '$bob[0]'";

$add_member = mysql_query($insert);

?>



<!-- Now we let them know if their registration was successful -->

<h1>Changed Army Name!</h1>

<p>Now go back to your <a href="overview.php">town</a>.</p>

<?php 

}
else
{

?>
<form action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post">
<?php
$toast = mysql_query("SELECT army FROM users WHERE username = '$username'");
if (!$toast) {
    echo 'Could not run query: ' . mysql_error();
    exit;
}
$chip = mysql_fetch_row($toast);
$result = mysql_query("SELECT owner FROM users WHERE username = '$username'");
if (!$result) {
    echo 'Could not run query: ' . mysql_error();
    exit;
}
$row = mysql_fetch_row($result);
if ($row[0] == 'true'){
echo '<table class="vis" width="100%">
	<tr><th colspan="2">Properties</th></tr>
	<tr><td>Change Name??:</td><td><input type="text" name="army" value="';
echo $chip[0];
echo '" /></td></tr>
	<tr><td colspan="2"><input type="submit" value="Change" /></td></tr>';
}
?>
</form>
<?php
}
?>

I don't know what but this script doesn't work...