my $ua = Flickr::Upload->new({'key' => $key, 'secret' => $secret});
$ua->agent( "flickr_folder_upload" );
$ua->env_proxy();

my $photoid = $ua->upload(
'photo'      => $processing_folder_image_list_paths[$i],
'auth_token' => $auth_token,
'is_public'  => 1,
'is_friend'  => 1,
'is_family'  => 1,
'async'      => 0,
);