Pier upload files on Server

Ciao, hi have Pharo1.4 image ( Latest update: #14445) where i load the ConfigurationOfPier3AddOns 3.0.3. I have a server where run Lighttpd server configured to manage *Selection* directory. Now i'm interested with the Pier Admin environment and the relative image options editor to load the files on the server at one specific *Selection* subdirectory. In the Pharo image i setup the MAExternalFileModel with self baseDirectory: 'Selection'. self baseUrl: 'http://www.server.com'. ( this is redirect to the server ) But i see what PRFileUploadWysiwygEditor work with NAExternalFile I need to setup the Resource Base Url (unspecified) Server Path Clear relative to the myapplication-admin or myapplication config ? Anyone test this setup? Thank, for any consideration. Dario