Hi, I have installed opmanager and netflow analiser plugin, Opmanager use MSSQL database , but netflow used other database (POSTGRESQL)

This link http://www.manageengine.com/network-monitoring/netflow-monitoring.html  say: 

"Does the NetFlow Plug–in need a separate database?

NetFlow plug–in uses the same MySQL⁄MS–SQL instance of OpManager for storing the collected data. "

But this not work for me, please how to configure netflow analiser plugin use this same opmanager database   ?

Thank's