Object Change Request and WorkOrder in EQL

I created a report "Change Request Tracking" , but 

I have a problem to show Approved By from Change Request object ( if change request status is APPROVED, i need to show who person approved it )

see my eQL  and report below for ref :

START WITH WorkOrder 
SELECT 
   Status,
   Code,
   Description,
   ChangeRequests.ChangeRequest.Id,
   ChangeRequests.ChangeRequest.Code CR_Code,
   CAST( ChangeRequests.ChangeRequest.DateRegistered AS STRING, 'dd, MMM, yyyy' ) CR_Registration,
   WorkTasks.Code,
   WorkTasks.Person.FirstName,
   WorkTasks.Person.Surname,
   WorkTasks.Description,
   WorkTasks.ActEndDate,
   ChangeRequests.ChangeRequest.Description,
   CASE WorkTasks.Status WHEN 'A' THEN 'Active' WHEN 'I' THEN 'Inbox' WHEN 'C' THEN 'Completed' ELSE 'OTHER STATUS' END,
   ChangeRequests.ChangeRequest.Class.Path,
   DISPLAY_NAME( ChangeRequests.ChangeRequest.Status ) CR_Status,
   CAST( ChangeRequests.ChangeRequest.DateApprOrReject AS STRING, 'dd, MMM, yyyy' ) CR_Apr_Date,
   ChangeRequests.ChangeRequest.Attributes["Global", "Originator"].Value 
   
WHERE 
   ChangeRequests.ChangeRequest.Class.Path = 'ECR Process'
   AND ChangeRequests.ChangeRequest.DateRegistered >= @DateFrom
   AND ChangeRequests.ChangeRequest.DateRegistered <= @DateTo
   AND ChangeRequests.ChangeRequest.Code LIKE @CR_Code
   AND ChangeRequests.ChangeRequest.Attributes["Global", "Originator"].Value LIKE @Origin
   AND ChangeRequests.ChangeRequest.Status LIKE @Status
   AND        (
          WorkTasks.Status IN  ( 'A', 'I' ) 
          OR              (
                WorkTasks.Status = 'C'
                AND WorkTasks.Code = 'E533C-APPROVED CLOSING PROJECT'
             )
       ) 
ORDER BY 
   ChangeRequests.ChangeRequest.Code

Does anyone know how to solve this issue ?

best regardsl,

Bambs