<input class="required" name="ipSet.customs_id" type="text" class="required" postField="customs_id" size="50" maxlength="14" readonly="true" />
<a class="btnLook" href="{:U('Customs/findselect')}" target=“dialog” rel=“ipsignset” warn="用户" lookupGroup="ipSet">查找公司</a>
<span class="info">(查询)</span>

以上一段from
我在提交的页面中用
$data['customs_id']=I('post.ipSet.customs_id','','htmlspecialchars');
或 $data['customs_id']=I('post.customs_id','','htmlspecialchars');
都无法获取到值 ，请问该如何做