Using Variables within Geopak Survey Preferences

I was wondering if I can use configuration variables to setup my Geopak Survey default preferences (SDP) file.  Specifically to define Project Directory, Job Directory, Global Working Directory, and Dataset Output Directory.  I would like to set them to $(_USTN_PROJECTDATA)Geopak/ and $(_USTN_PROJECTDATA)Geopak/Survey/.

 Will Geopak Survey recognize this?

Geopak 8.11.05.39 and Microstation 8.11.05.17