function my_update($data){
// TO DO : Check on overlapping dates : forbidden !
$var = $data->get_value("start"); // we have just a daynumber and a month, lets add a year
$arr = explode("-",$var);
$var = "2010-".$arr[1]."-".$arr[0];
$date = date_create($var);
if ($date) {
$var = date_format($date, 'Y-m-d');
$data->set_value("start", $var);
}
$var = $data->get_value("end"); // we have just a daynumber and a month, lets add a year
$arr = explode("-",$var);
$var = "2010-".$arr[1]."-".$arr[0];
$date = date_create($var);
if ($date) {
$var = date_format($date, 'Y-m-d');
$data->set_value("end", $var);
}
$var = $data->get_value("price"); // format this for europe
$data->set_value('price', str_replace(',','.',(str_replace(' ', '',$var))));
$var = $data->get_value("price_2"); // format this for europe
$data->set_value('price_2', str_replace(',','.',(str_replace(' ', '',$var))));
}