Hi,
i'm using Apache Trinidad and seam and i have a small problem

problem : i have a tr:inputListOfValues after user selects a record from it, i set record
to entity instance in the begginig of conversation when user submits form, seam creates new instance of previous entity  and attribute i set it before goes null

MovieHomeBean.java

public class MovieHomeBean extends EntityHome<Movie> {

@Begin(join=true, flushMode=FlushModeType.MANUAL)
public String setPerson(Person p){
         RequestContext.getCurrentInstance().returnFromDialog(p.getLastName(), null);
      getInstance().setDirectorId(p);
     return null;
    }

}

movie.xhtml

<tr:inputListOfValues required="true" searchDesc="Pick a member"                action="dialog:memberSelector" columns="20">
<tr:setActionListener to="#{pageFlowScope.memType}" from="T" />
</tr:inputListOfValues>
<h:commandButton 
rendered="#{not movieHome.managed}" id="register"
value=" register movie "
action="#{movieHome.persist}">

memberDialog.xhtml

<h:dataTable value="#{personList}" var="_person">
<tr:commandButton text=" select person " 
action="#{movieHome.setPerson(_person)}">
<tr:setActionListener to="#{movieHome.instance.directorId}" from="#{_person}" />
</tr:commandButton>     
</h:datable>