<filter name="add_friend_group" module="communication" act="procCommunicationAddFriendGroup" confirm_msg_code="confirm_submit">
    <form>
        <node target="title" required="true" minlength="1" maxlength="240" />
    </form>
    <parameter />
    <response callback_func="completeAddFriendGroup">
        <tag name="error" />
        <tag name="message" />
    </response>
</filter>
