OK - I tried checkbox_group, with this code:

 } elsif ($type =~ /check/) {
            my %hash = ();
            $type =~ s/check/checkbox/;
            print "$english:\n";
            (my $values, my $labels) = split (':',$params[0]);
            my @checks_list = split (';',$values);
            my @clabels_list = split (';',$labels);
            @hash{@checks_list} = @clabels_list;
            print $q->checkbox_group(-name=>"$name", -values=>\@checks
+_list,-default=>\@check_array, -labels=>\%hash);
            print $q->br();
        }
[download]

Still no checked boxes. :-(