Iterating over JDOM Tree with nested tags

[Vladimir Miguro]

Hi boys & girls... :-)
The problem is:
I have JDOM Document in ActionForm bean. In my jsp page I iterate over it. When I need only to display information - no problem:

Structure of tree:
-products
--category*
---subcategory*
----product*
-----model
-----producer

   
<table>
            <c:forEach items="${form.root.children}" var="category" varStatus="status">
                <bean:size id="size" collection="${category.children}"/>
                <tr>
                    <td>
                            ${category.attributes[0].value}
                    </td>
                    <td>
                        ${size}
                    </td>
                </tr>
            </c:forEach>
</table>
 

And I need a page, where I can edit all the fields. I decided to use nested tags. cindex and sindex - request parameters for current category and subcategory:

  
<nested:form action="product">
   <nested:nest  property="root.children[${param.cindex}].children[${param.sindex}]">
      <nested:iterate property="chilren" id="product">
         ..... <%-- smth else --%>
      </nested:iterate>
   </nested:nest>
</nested:form>
  

All right - this works fine until I pressed submit... Because JDOM element does not have method setChilren(). I didn't understand - because when html was rendered it is correct. One solution is to use <c:forEach/>. But it isn't nice... :-)
Any thoughts ? :-)

[Vladimir Miguro]

I've found solution myself... When I pressing submit, I'm going to the same page... so cindex и sindex params become uninitialized...