java - Primefaces Wizard does not proceed with selectOneMenu -

the wizard doesn't proceed next tab when use value="#{wizard.filial.numfilial}". but, works fine when use value="#{wizard.intfilial}". can me?

<!--xhtml--> <h:selectonemenu id="fieldfilial" title="filial" value="#{wizard.filial.numfilial}" required="true" label="filial*" >     <f:selectitem itemlabel="selecione" />     <f:selectitems value="#{commons.filiais}"  var="cfilial"                                itemvalue="#{cfilial.numfilial}" itemlabel="#{cfilial.descricao} "/> </h:selectonemenu> 

wizard.java

    @managedbean     @sessionscoped     public class wizard{         private filial filial;         private int intfilial;         <getters/setters> }    **commons.java**      @managedbean     @sessionscoped     public class commons{         private list<filial> filiais;         <getters/setters> }  <!--filial--> public class filial implements comparable<filial>, serializable {     private int numfilial;     private string descricao;     <getters/setters> 

you need instantiate filial object because need instance of filial type object contains numfilial.

try

private filial filial = new filial();