BI Publisher and forms integration

calder1

Simple question

Following this document

How to Call a BI Publisher Report from Forms 12c Using RUN_REPORT_OBJECT (Doc ID 2235962.1)

This document keeps referring to 

a virtually mapped directory   

eg  the final line says

The report pdf output is placed in a virtually mapped directory and then called using WEB.SHOW_DOCUMENT(). The URL used in the WEB.SHOW_DOCUMENT() call is created based on the FORMS_BI_SERVER value and the virtual mapping name of the pdf file directory location.

So Question

we can create a file in a physical folder and we can call a virtual directory  -  but  how do we map the two to each other  ?

Bi Publisher on one server  - forms on another  -  File be created on BI publisher,   virtual mapping required on BI server.

NO OHS was installed  only admin server on 7001  and BI server on 7003

Any ideas  Please  ?