<filter name="insert_lang" module="module" act="procModuleAdminInsertLang" confirm_msg_code="confirm_submit">
    <form>
        <node target="lang_code" required="true" filter="alpha_number"/>
    </form>
    <response callback_func="completeInsertLang">
        <tag name="error" />
        <tag name="message" />
        <tag name="name" />
    </response>
</filter>
