DEDE调用文章列表时自增字段autoindex

{dede:arclist titlelen='120' row='8' typeid='2'}
         <li class="li[field:global.autoindex/]"><a href="[field:arcurl /]" title="[field:title/]" target="_blank" >[field:title function='cn_substr(@me,10)'/]</a></li>
 {/dede:arclist}