passing a parameter to valueChangeListener

[kannattaa]

i have to pass a parameter to valueChangeListener in the example:

<a4j:repeat value="#{bean.getItems()}" var="currentItem">
 <a4j:form ajaxSingle="true">
 <rich:inputNumberSpinner value="#{bean.getSomeOtherBean(currentItem).quantity}" immediate="true" valueChangeListener="#{bean.updateQuantity}">
 <a4j:support event="onchange" reRender="quantityOutputId"/>
 </rich:inputNumberSpinner>
 <s:div id="quantityOutputId">
 <h:outputText value="#{bean.getSomeOtherBean(currentItem).quantity}" />
 </s:div>
 </a4j:form>
</a4j:repeat>

public void updateQuantity(ValueChangeEvent event){
 getSomeOtherBean(currentItem).setQuantity(event.getNewValue());
}

how to pass currentItem to listener?
or is there another way to change "quantity"?