DGNws location

Has anyone gotten the DGNws to be created in a location other than WorkSetsRoot by default? We are trying to define _USTN_WORKSETDGNWS to $(_USTN_WORKSETROOT)$(_USTN_WORKSETNAME).DGNWS. It will not create the DGNws file in this location until after the workset is created and the intital DGNws file which is create in $(_USTN_WORKSETsROOT) is deleted and the application relaunched. We have tried to define the _USTN_WORKSETDGNWS variable at the Organization, WorkSpace, and WorkSet levels without any success. Just wondering if anyone has had any success in getting this to work successfully. We would ike to define this in the WorkSet.Template file.