PHP to MySQL drop down list no longer passing value
<tr><td align='right'>Mother Tongue:</td>
<td><select name="MotherTongue">
<?
while($row = mysql_fetch_array($mothertonguesql)) {

if ($row['Language'] == $mothertongue){
?>
<option selected value="<?=$row['Language']?>"><?=$row['Language']?></option>
<?
}
else {
?>
<option value="<?=$row['Language']?>"><?=$row['Language']?></option>
<?
}}
?>
</select>
</td>
</tr>

$MotherTongue=$_POST['MotherTongue'];
 $MotherTongue = mysql_real_escape_string($MotherTongue);

$sql="UPDATE Teacher SET Password='$Password', FirstName='$FirstName', Surname='$Surname', Address1 = '$Address1', Address2='$Address2', PLZ='$PLZ', City='$City', Country='$Country', TelNo='$TelNo', EmailAddress='$EmailAddress', MotherTongue='$MotherTongue', CanTeachLang1='$CanTeachLang1', CanTeachLang2='$CanTeachLang2', CanTeachLang3='$CanTeachLang3', CanTeachLang4='$CanTeachLang4', CanTeachLang5='$CanTeachLang5', Profile='$Profile', HourlyRate='$HourlyRate', TeachingAddress='$TeachingAddress', WillTravelToStudent='$WillTravelToStudent', idMailFrequency = '$idMailFrequency' WHERE Username = '$Username'";


if (!mysql_query($sql, $link))
  {
  die('Error:' . mysql_error());
  }