function BeforeEdit(&$values, $where, &$oldvalues, &$keys)
{
$message = "Changed fields \n";
foreach ($values as $key => $value)
{
if ($value!=$oldvalues[$key])
$message .= $key . ": " . $value . "\n";
}
$email="test@test.com";
$subject="Sample subject";
mail($email, $subject, $message);
return true;
}