<filter name="add_openid_to_member" module="member" act="procMemberAddOpenIDToMember">
    <form>
        <node target="openid" required="true" minlength="2" maxlength="80"/>
    </form>
    <parameter>
        <param name="openid" target="openid" />
    </parameter>
    <response callback_func="completeModify">
        <tag name="error" />
        <tag name="message" />
    </response>
</filter>
