Export Question

Below, "length" does not work. May I ask what the proper code is for length?

Thanks

<table>
        <tr>
             <th class="title">BPM</th>            
            <th class="title">Title</th>
            <th class="title">Artist</th>
            <th class="title">Comment</th>
            <th class="title">Length</th>
                </tr>

$loop(%_filename_ext%)
        <tr>
            <td$if($odd(%_counter%), class="odd",)>$replace(%bpm%,&,&amp;)</td>            
            <td$if($odd(%_counter%), class="odd",)>$replace(%title%,&,&amp;)</td>
            <td$if($odd(%_counter%), class="odd",)>$replace(%artist%,&,&amp;)</td>
            <td$if($odd(%_counter%), class="odd",)>$replace(%comment%,&,&amp;)</td>
            <td$if($odd(%_counter%), class="odd",)>$replace(%length%,&,&amp;)</td>
                        
        </tr>
$loopend()

    </table>

Have a look here: http://help.mp3tag.de/options_export.html#placeholder

%_length% Length (formatted)
%_length_seconds% Length (in seconds)

That worked fine. Thanks very much.