$query->checkbox_group(-name=>'group_name',
        -values=>['eenie','meenie','minie','moe'],
        -default=>['eenie','moe'],
        -linebreak=>'true',
        -labels=>\%labels
);

##</code><code>##

foreach $key (0..$#languages){
   $flag = ${'flag_' . $lang[$key][1]};
}