Tree View Second level is not displaying bind parameter

Question

Studio Edition Version 11.1.2.2.0appears this problem is addressed in
http://dailydevfixes.blogspot.com/2011/07/setting-bind-parameters-on-hierarchy-of.html
unfortunately I must be missing something.
as a test using the hr schema
I was doing a tree view with hire date as the first level then the employee id, last name and first name as the second level.
I hard coded employee id of 187 on a bean called by a button.
the first level is updated unfortunately the second level is not (employee id 107 should not show up)
--1999-02-07
----- 187 Cabrio Anthony
----- 107 Lorentz Dianahere is my bean the first level is updated but the second level is not not quite sure what I am missing
    public void ButtonClick(ActionEvent actionEvent) {
        BindingContext bindingctx = BindingContext.getCurrent();
        BindingContainer bindings = bindingctx.getCurrentBindingsEntry();
        DCBindingContainer bindingsImpl = (DCBindingContainer) bindings;
        DCIteratorBinding dciter = bindingsImpl.findIteratorBinding("ParentVO1Iterator");
        ViewObject Parentvo =dciter.getViewObject();
        Parentvo.setNamedWhereClauseParam("empid",187);
        Parentvo.executeQuery();
        AttributeDef attrDef = Parentvo.findAttributeDef("ChildVO");
        ViewObject childvo = attrDef.getAccessorVO(Parentvo);
        childvo.setNamedWhereClauseParam("empid",187);
        childvo.executeQuery();
        AdfFacesContext adfFCtx = AdfFacesContext.getCurrentInstance();
       adfFCtx.addPartialTarget(treeupdate);
    }here is the query for the parent view object.
select trunc(hire_date) hire_dt
from employees
where :empid is null or employee_id = :empid
group by trunc(hire_date)here is the query for the child view object
select trunc(hire_date) hire_dt, employee_id, employee_id||' '||last_name||' '||first_name nm
from employees
where :empid is null or employee_id = :empid
order by trunc(hire_date)here is the view link
<?xml version="1.0" encoding="windows-1252" ?>
<!DOCTYPE ViewLink SYSTEM "jbo_03_01.dtd">
<!---->
<ViewLink
  xmlns="http://xmlns.oracle.com/bc4j"
  Name="ParentToChildViewLink"
  Version="11.1.2.61.83">
  <Properties>
    <SchemaBasedProperties>
      <LABEL
        ResId="model.view.link.ParentToChildViewLink_LABEL"/>
    </SchemaBasedProperties>
  </Properties>
  <ViewLinkDefEnd
    Name="ParentVO"
    Cardinality="1"
    Source="true"
    Owner="model.view.ParentVO">
    <DesignTime>
      <Attr Name="_accessor" Value="true"/>
      <Attr Name="_finderName" Value="ParentVO"/>
      <Attr Name="_isUpdateable" Value="true"/>
    </DesignTime>
    <AttrArray Name="Attributes">
      <Item Value="model.view.ParentVO.HireDt"/>
    </AttrArray>
  </ViewLinkDefEnd>
  <ViewLinkDefEnd
    Name="ChildVO"
    Cardinality="-1"
    Owner="model.view.ChildVO">
    <DesignTime>
      <Attr Name="_finderName" Value="ChildVO"/>
      <Attr Name="_isUpdateable" Value="true"/>
    </DesignTime>
    <AttrArray Name="Attributes">
      <Item Value="model.view.ChildVO.HireDt"/>
    </AttrArray>
  </ViewLinkDefEnd>
  <ResourceBundle>
    <PropertiesBundle
      PropertiesFile="model.ModelBundle"/>
  </ResourceBundle>
</ViewLink>and here is the tree
    <af:tree value="#{bindings.ParentVO1.treeModel}" var="node"
                             selectionListener="#{bindings.ParentVO1.treeModel.makeCurrent}" rowSelection="single"
                             id="t1" binding="#{myBean.treeupdate}">
                        <f:facet name="nodeStamp">
                            <af:outputText value="#{node}" id="ot1"/>
                        </f:facet>
                    </af:tree>

Answer 1

thanks I am working through that example unfortunately I ran into a problem
previously (in my real application) I was using bind parameters and my query had the following where clause.
( I did this to turn a comma separated list into an in statement)
  WHERE    :Bind_Batch_NM_Comma_Sep_List IS NULL
         OR batch_nm IN
               (    SELECT REGEXP_SUBSTR (:Bind_Batch_NM_Comma_Sep_List,
                                          '[^,]+',
                                          1,
                                          LEVEL)
                              batch_nm
                      FROM DUAL
                CONNECT BY LEVEL <=
                                REGEXP_COUNT (:Bind_Batch_NM_Comma_Sep_List,
                              + 1)however in the example presented you are to create view criteria and there is a panel on the right called view object where clause but I can not figure out how to type into it directly
and I find it unlikely I can recreate this where clause using the add item button.
is there a way to manually type the where clause in the view object where clause box?