Bober on "zpArdoise"

Hi All

Could you tell me how can I make 5 or more columns in this theme?
1. I change Options->Theme->Albums->thumbnails per row No result;
2. I change themeoptions.php setThemeOption('albums_per_row', '5', NULL, 'zpArdoise'); No result
3. I change inc_print_album_thumb.php <?php if ($x == 4) {$lastcol=' class="lastcol"'; $x = 0;} ?>; No result

Please help me Obi-Wan Kenobi!