how to insert a nest tiles

[maven apache]

Hi: I know how to insert the attribut and defination in the jsp page,but I
can not insert a nestly tiles.

This is the exmaple:

    <definition name="/commonPage" template="/jsp/common/template.jsp">

        <put-attribute name="header" value="/jsp/common/defaultHeader.jsp" />

        <put-attribute name="menu" value="/jsp/common/defaultMenu.jsp" />

        <put-attribute name="footer" value="/jsp/common/defaultFooter.jsp" />

    </definition>


    <definition name="/all" extends="/commonPage">

        <put-attribute name="body" value="/jsp/all_body.jsp" />

        <put-list-attribute name="scriptList">

            <add-attribute value="/res/script/all.js" />

        </put-list-attribute>
    </definition>

    <definition name="/time" extends="/commonPage">

        <put-attribute name="timebar" value="/jsp/common/timebar.jsp" />

        <put-attribute name="body" value="/jsp/time_body.jsp" />

        <put-list-attribute name="scriptList"></put-list-attribute>

    </definition>

</tiles-definitions>

And in the tempalte.jsp:

....
<tiles:insertAttribute name="meun">
...
<tiles:insertAttribute name="footer">

Now,in the time_body.jsp,I want to insert another jsp -- timebar.jsp.

So I define the attribute in the definition of "/time",however it does not
work.

This is the codes in the time_body.jsp:

<div class="div_fullwidth">

    <tiles:insertAttribute name="timebar" />
</div>

Any ideas?