What is wrong?
$queryrequest = "update customer set CountryID ='$CountryID', DistributorID = '$DistributorID', Name = '$name', Address = '$address', ";
$queryrequest .="ContactPerson = '$person', Anwendung = '$anwend', Geraetumfeld = '$umfeld', ";
$queryrequest .="Schriftwechsel = '$schrift', Aufstelldate = '$stell', WorkPhone = '$phone', FaxPhone = '$fax' ";
$queryrequest .="Email = '$email' where CustomerID = '$CustomerID'";
