Problems retrieving the Datatable object in P:Dialog

Question

I have a datatable that lists all the students, and I have a button that opens a modal, in this modal I want to continue manipulating my datatable object, for this I use the propriedadef:setPropertyActionListener, but the object always comes empty, I’ve looked at several topics here on the forum but nothing solved, if someone can give a north I thank;

There in the dialog the attribute ID always comes zero, there’s my problem but I can’t find why.

Bean

@ManagedBean(name = "funcionarioMB")
@SessionScoped
public class FuncionarioMB {

private Aluno aluno;
private List<Aluno> alunosInativos;
private FuncionarioDAO fDAO = new FuncionarioDAO();

//getters and setters


//construtor
public FuncionarioMB() {
        aluno = new Aluno();
        alunosInativos = fDAO.ListarAlunosInativos();
}

//Tela

        <h:form id="form" prependId="false">
        <p:dataTable var="aluno" value="#{funcionarioMB.alunosInativos}">

             .... OUTRAS COLUNAS....

            <div class="ui-g-12">
            <p:column style="width:60px">
           <p:commandButton value="Recusar" update="confirmaRecusa" oncomplete="PF('confirmaRecusa').show()" styleClass="btn btn-danger btn-block" >
            <f:setPropertyActionListener value="#{aluno}" target="#{funcionarioMB.aluno}" />
             </p:commandButton>
            </p:column>
            </div>
            </p:dataTable>

//Dialog

<p:dialog header="Motivo" widgetVar="confirmaRecusa" modal="true" id="confirmaRecusa" height="200" width="200">
<p:inputText id="email" maxlength="200" value="#{funcionarioMB.email.assunto}" styleClass="form-control" required="true" requiredMessage="Necessário informar um motivo" />
<h:outputText value="#{funcionarioMB.aluno.id}" />
<p:commandButton value="Aceitar" id="aceitar" action="#{funcionarioMB.recusarAluno(aluno)}" styleClass="btn btn-success btn-block" ajax="false" />
</p:dialog></h:form>`