use Plack::Builder;
use Plack::Session;
use Data::Dumper;


  my $app = sub {
      my $env = shift;
      my $session = Plack::Session->new($env);

      $session->set('counter',$session->get('counter')+1);

      my $dumped = Dumper($session);
      return [
          200,
          [ 'Content-Type' => 'text/plain' ],
          [ $dumped ],
      ];
  };


  builder {
      enable 'Session';
      $app;
  };


##</code><code>##


plackup action.psgi


##</code><code>##


$VAR1 = bless( {
                 'options' => {
                                'id' => 'c433450e1163097fc6d53bf06ac893c89a9d0a78'
                              },
                 'session' => {
                                'counter' => 15
                              }
               }, 'Plack::Session' );