a4j:actionparam inside dynamically genrated menu

[masterhard]

I want to make dynamically generated context menu allowing user to change a property of an object represented by rich:dataTable row. Here is my xhtml source code:

<rich:contextMenu attached="true" submitMode="ajax" id="computers_context_menu">
 <rich:menuItem value="Open" reRender="comptogpanel,computerInfoPanel">
 <a4j:actionparam value="#{bean.selectedComputer2}" assignTo="#{bean.selectedComputer}"/>
 </rich:menuItem>
 <rich:menuGroup value="Place to">
 <c:forEach items="#{bean.softmanager.depts}" var="item">
 <rich:menuItem value="#{item.name}" reRender="computersDataTable">
 <a4j:actionparam value="#{item}" assignTo="#{bean.selectedComputer2Dept}"/>
 </rich:menuItem>
 <rich:menuItem value="#{item.name} 2" action="#{bean.selectedComputer2Dept2}"/>
 </c:forEach>
 </rich:menuGroup>
</rich:contextMenu>

<rich:dataTable ......>
<a4j:support event="onRowMouseUp" actionListener="#{bean.computersRowSelected2}"/>
<rich:componentControl event="oncontextmenu" for="computers_context_menu" operation="show"/>
...
</rich:dataTable>

Context Menu structure generated OK. But not all menuitems work. "Open" menuitem works fine. Menuitem with caption "#{item.name} 2" works perfectly too (bean method selectedComputer2Dept2 is called). But item with caption "#{item.name}" does not work: setSelectedComputer2Dept method is not called. And there is no exceptions or other output. Context menu dissappeards and nothing more happens.

What't wrong?

[masterhard]

Update: If I replace

<a4j:actionparam value="#{item}" assignTo="#{bean.selectedComputer2Dept}"/>

with

<a4j:actionparam value="#{item.id}" assignTo="#{bean.selectedComputer2DeptId}"/>

method setSelectedComputer2DeptId is called.

[ilya_shaikovsky]

could ypu please try to add name attribute to actionparam? it's mandatory attribute.

[amitev]

the component should thrown an exception if the name attribute is missign...

[masterhard]

I tried to add name attribute - still nothing happens...

I am new to richfaces, but it looks like actionparam passes assigned value via JavaScript, so it is impossible to assign values of Java object type. Just primitive types (int, String and so on) are allowed. Am I right?