How to create a List in a Session and submit before - primefaces

Question

I need create a list of Phones in na and submit before.
In my firt try the object came empty and the list shows a list of null objets
<h:panelGrid id="gridPhone" columns="5">
<h:outputText value="Numero:" />
<h:inputText value="#{profileMB.phone.number}" size="10"/>
<h:outputText value="Tipo" />
<p:selectOneMenu id="selPhoneType" value="#{profileMB.phone.type}" >
<f:selectItems var="phoneType" value="#{profileMB.listPhoneTypes}" itemLabel="#{phoneType.description}" itemValue="#{phoneType}" />
</p:selectOneMenu>
<p:commandButton action="#{profileMB.addPhoneOnList()}" immediate="true" value="adicionar" update=":messageGrowl listPhones"/>
<f:facet name="footer">
<h:panelGroup style="display:block; text-align:center;width: 300px;">
<p:selectOneListbox id="listPhones" >
<f:selectItems var="phones" value="#{profileMB.phones}" itemLabel="#{phones.number}" />
</p:selectOneListbox>
</h:panelGroup>
</f:facet>
<p:ajaxStatus style="display:block;margin-bottom:2em;height:24px;">
<f:facet name="default">
<h:outputText value="" />
</f:facet>
<f:facet name="start">
<p:graphicImage name="/images/spiffygif_30x30.gif" />
</f:facet>
<f:facet name="complete">
<h:outputText value="" />
</f:facet>
</p:ajaxStatus>
</h:panelGrid>
in my second try the object was filled but the Litt does update
<h:panelGrid id="gridPhone" columns="5">
<h:outputText value="Numero:" />
<h:inputText value="#{profileMB.phone.number}" size="10"/>
<h:outputText value="Tipo" />
<p:selectOneMenu id="selPhoneType" value="#{profileMB.phone.type}" >
<f:selectItems var="phoneType" value="#{profileMB.listPhoneTypes}" itemLabel="#{phoneType.description}" itemValue="#{phoneType}" />
</p:selectOneMenu>
<p:commandButton action="#{profileMB.addPhoneOnList()}" partialSubmit="true" process="gridPhone, listPhones" value="adicionar" update=":messageGrowl"/>
<f:facet name="footer">
<h:panelGroup style="display:block; text-align:center;width: 300px;">
<p:selectOneListbox id="listPhones" >
<f:selectItems var="phones" value="#{profileMB.phones}" itemLabel="#{phones.number}" />
</p:selectOneListbox>
</h:panelGroup>
</f:facet>
<p:ajaxStatus style="display:block;margin-bottom:2em;height:24px;">
<f:facet name="default">
<h:outputText value="" />
</f:facet>
<f:facet name="start">
<p:graphicImage name="/images/spiffygif_30x30.gif" />
</f:facet>
<f:facet name="complete">
<h:outputText value="" />
</f:facet>
</p:ajaxStatus>
</h:panelGrid>
I have try sereval forms but dont work
:(