Has anyone used this bit of code successfully, I've can't get it do anything.

<iochannel id="Digital Output X" port="0" brain="Brain1" type="digital_output">
<defaults defaultstate="off" />
<sequence period="1000" iterations="1">
<value order="0" state="on"></value>
<value order="10" state="off"></value>
<value order="12" state="on"></value>
<value order="22" state="off"></value>
</sequence>
</iochannel>