my @invoicing_list = split( /\s*\,\s*/, $cgi->param('invoicing_list') );
push @invoicing_list, 'POST' if $cgi->param('invoicing_list_POST');
$cgi->param('invoicing_list', join(',', @invoicing_list) );
my @invoicing_list = split( /\s*\,\s*/, $cgi->param('invoicing_list') );
push @invoicing_list, 'POST' if $cgi->param('invoicing_list_POST');
$cgi->param('invoicing_list', join(',', @invoicing_list) );