if( $form->{customer_id} && !$form->{taxincluded_changed_by_user} ) {
my $customer = SL::DB::Customer->new(id => $form->{customer_id})->load();
$form->{taxincluded} = defined($customer->taxincluded_checked) ? $customer->taxincluded_checked : $myconfig{taxincluded_checked};
if( $form->{customer_id} && !$form->{taxincluded_changed_by_user} ) {
my $customer = SL::DB::Customer->new(id => $form->{customer_id})->load();
$form->{taxincluded} = defined($customer->taxincluded_checked) ? $customer->taxincluded_checked : $myconfig{taxincluded_checked};