Recursive sql at the universe designer level

Hi,

Is there any way to write recursive sql at the derived table level in the universe?

If i use below with clause query it is throwing error

WITH Asd(Child,
  Parent
   )
AS(SELECT Employee_Id,
  Manager_Id
   FROM Employees
   UNIONALL
   SELECT E.Employee_Id,
  A.Parent
   FROM Employees E, Asd A
   WHERE E.Manager_Id = A.Child
   )
SELECT Child,
  Parent
  FROM Asd
  WHERE Parent ISNOTNULL
  ORDERBY Child, Parent;

if i use below query then am getting two level data (parent and child but not grand parents and all)

Select empno,ename,mgr

   from emp

   start with mgr is null

   connect by prior empno = mgr;

Is there any way to get n levels of data using connect by prior clause? Please help me