Is there an environment variable for local synched SharePoint folder location for a user

Using a 3rd party app, FileCenter, which needs a common mapped drive letter for the local install configurations to point to.  The SharePoint equivalent to the variable "OneDrive"

Local synched, On-Demand, SharePoint.  (Already using Zee Drive for direct but slower access to mapped drive directly to the cloud SPt)

Can work around it with an autostart bat file for each user at each pc they use,  with net use commands. But wb hecka easier if there's an environment variable.