eOne Extender - Add extender field to report writer report

http://www.erpsoftwareblog.com/2013/08/adding-extender-fields-to-report-writer/

• Edit Report
• Create Calculated Field > String
• Functions>User Defined>System>RW_TableHeaderString
• RW_TableHeaderString 
• Integer 3107
• String ExtenderWindowID
• Select * from ext20100
• KeyFieldfromGP (Fields>Table>Select Keyfield in GP, eg. PONUMBER)
• Integer 0 (DataType)
• Integer 1 (Field ID in extender, increment for each field in order)