Thanks!
my $header2 = $IN->cookie(-name => 'lh_username', -value => 7, -path => '/', -expires => "+31m", -domain => '.lokalhelden.de')->cookie_header() . "\n";
print $header2;
seems to work.
What is the difference to
my $cookie = $IN->cookie(-name => 'lh_username', -value => 7, -path => '/', -expires => "+31m", -domain => '.lokalhelden.de');
print $IN->header(-cookie => $cookie);
Regards
Johannes