Query on VO's parameter

Hi everyone,
I've created a VO similar to script below. Problem is I just can't execute the query.
SELECT xx.full_name
      ,xx.employee_number
      ,xx.person_id
From xx
START WITH xx.person_id       = :1
CONNECT BY PRIOR xx.person_id = xx.supervisor_idAn oaexception occured saying not all variables bound when I try to use it as LOV.
Thanks for any assistance,
Elmer

Hi Elmer,
I don't find any error in it. However i tried to do the same on my system and I am able to execute the query and getting no error at all.
Here is what I did in process request of the controller by creating VO at runtime and setting its whereclause dynamically.
ViewObject viewobject = pageContext.getApplicationModule(webBean).findViewObject("ObtainScoDetails");
if(viewobject == null)
String s14 = " SELECT papf.full_name, papf.employee_number, papf.person_id From per_all_people_f papf START WITH papf.person_id =:1 CONNECT BY PRIOR papf.employee_number = papf.person_id";
viewobject = am.createViewObjectFromQueryStmt("ObtainScoDetails", s14);
String person_id ="21";
viewobject.setWhereClauseParams(null);
viewobject.setWhereClauseParam(0, person_id);
pageContext.writeDiagnostics("Anil", "Above Query Executed of New VO", 1);
viewobject.executeQuery();
viewobject.reset();
viewobject.next();
pageContext.writeDiagnostics("Anil", "Query Executed of New VO"+viewobject.getQuery(), 1);
pageContext.writeDiagnostics("Anil", "Query Executed of New VO"+viewobject.getCurrentRow().getAttribute(0), 1);
pageContext.writeDiagnostics("Anil", "Query Executed of New VO"+viewobject.getCurrentRow().getAttribute(1), 1);
pageContext.writeDiagnostics("Anil", "Query Executed of New VO"+viewobject.getCurrentRow().getAttribute(2), 1);
Thanks
--Anil

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