dropdown fra database vil ikke sende value til formaction

Dropdown script
// Write out our query.
    $query = "SELECT campain FROM campains WHERE username='".$username."'";
    // Execute it, or return the error message if there's a problem.
    $result = mysql_query($query) or die(mysql_error());

    $dropdown = '<select name="campain">';
    while($row = mysql_fetch_assoc($result)) {
      $dropdown .= "\r\n<option value='{$row['campain']}'>{$row['campain']}</option>";
    }
    $dropdown .= "\r\n</select>";
    echo $dropdown;

side til at indsaette i database:

$amount = $_POST['amount'];
$campain = $_post['campain'];

faar ingen ting med over til variablen $campain
I formen faar den fint values men vil ikke flytte det med over til formaction siden, <form action="add_campain_cd.php" method="post">

$amount faar den med over.