# append data
foreach my$key (keys %{$data_to_append})
{
   # check whether we can append the data
   next if !exists($full_data->{$key});

   # append data
   # HIER ein push() einfuegen
   push(@{$full_data->{$key}->[0]}, @{shift(@{$data_to_append->{$key}})});
   push(@{$full_data->{$key}}, @{$data_to_append->{$key}});
}