$_->detach for $tree->fclass('rc'); # requires contest
$tree->fid('solution_modal')->fclass('modal-body')->replace_content(literal $args{solution});
}
+ $tree->fid('solution')->detach unless $args{solution};
if ($args{cansubmit}) {
$tree->look_down(name => 'problem')->attr(value => $args{id});
my $contest = $tree->look_down(name => 'contest');