[Trinidad] How to use an iterator, selectOneChoice and partialTriggers?

[Roeder, Andreas]

I'm trying to create generic selectOneChoice elements. When the first 
selectOneChoice value changes it should update the next one in the list and so 
on. 
I tried to do that via the id, partialTriggers and a ValueChangeListener:

<tr:iterator value="#{genericFormBean.formDesc.fieldList}"
                                var="field">
  <tr:selectOneChoice
        id="#{field.id}" 
        partialTriggers="#{field.partialTriggers}"
        valueChangeListener="#{genericFormBean.valueChange}" 
        value="#{genericFormBean.formDesc.modelMap[field.id]}" 
        <f:selectItems
                value="#{genericFormBean.selectItemMap[field.itemList]}" /> 
  </tr:selectOneChoice>
<tr:iterator>

But I cannot set the id of the selectOneChoice element. When I try to get the 
other selectOneChoice elements in the valueChangeListener I just see one 
element in the iterator.childs() collection. Why is that? 

I also tried to use a custom renderer to set the id, but as soon I change the 
id of one selectOneChoice element all other elements are getting the same id. 
It's pretty confusing to me.

Is there another way to do that?

Best Regards,

Andreas