eu gostaria que o selectonelistbox fizesse assim: que um parametro quando selecionado clickando num button passase para outro selectonelist box.
eu tentei mais ainda naum conseguir
<h:selectOneListbox id="selOneList" size="5" style="width: 123px" value="#{ususario.nome}">
<f:selectItem itemValue="Alan1 " itemLabel="Valor1" id="a1"/>
<f:selectItem itemValue="Alan2 " itemLabel="Valor2" id="a2"/>
<f:selectItem itemValue="Alan3 " itemLabel="Valor3" id="a3"/>
<f:selectItem itemValue="Alan4 " itemLabel="Valor4" id="a4"/>
<a4j:support id="a4jinte" reRender = "selecttwolist" event=" onclick " />
</h:selectOneListbox>
<h:form>
<a4j:commandButton id="a4it"value="->" reRender="selecttwolist" onclick="selecttwolist">
</a4j:commandButton>
<a4j:commandButton value="<-" reRender="selOneList"onclick="selOneList">
</a4j:commandButton>
</h:form>
<rich:separator></rich:separator> <br />
<h:selectOneListbox id="selecttwolist" size="5" style="width: 123px"value="#{ususario.nome}">
<a4j:support id="a4itsnd" reRender="selOneList" event=" onclick " ></a4j:support>
</h:selectOneListbox>