Search for nth component nested in a4j: repeat tag in JSF tree

I have a problem finding a component in a JSF tree. Suppose I have the following template:

<a4j:form id="someForm">
<a4j:outputPanel id="somePanel">
    <a4j:repeat id="people" value="#{bean.people}" rowKeyVar="_row" var="_data" stateVar="_state">
        <s:decorate id="personPanel" template="edit.xhtml">

            <h:outputLabel for="personAge" value="Choose your age:" />

            <h:selectOneMenu id="personAge" value="#{_data.age}">
                <s:selectItems var="_item" value="#{ageValues}" label="#{_item.description}" />
            </h:selectOneMenu>

        </s:decorate>
    </a4j:repeat>
</a4j:outputPanel>
</a4j:form>

Namespaces are defined as:

xmlns:a4j="http://richfaces.org/a4j"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:s="http://jboss.com/products/seam/taglib"

As you can see, there is a tag a4j:repeat, so n selected entries can be displayed on the page. How can I find the nth component in the server side JSF tree? On the client side components are displayed as follows: someForm:somePanel:0:personPanel:personAge. I am trying to find a component this way:

UIViewRoot root = FacesContext.getCurrentInstance().getViewRoot();
UIInput ageInput = (UIInput) root.findComponent("someForm:somePanel:0:personPanel:personAge");

But you can’t find him. I checked the tree, and it looks like a component with this identifier does not exist.

So how can I get this component? Is there any way to achieve this?

EDIT:

. , . . :

FacesContext facesContext = FacesContext.getCurrentInstance();
String ageValue = facesContext.getExternalContext().getRequestParameterMap().get("someForm:somePanel:0:personPanel:personAge");

.