How to force the CreateBusinessService method to use the FilePath in the adapter settings?

A BusinessService XYZ is created by extending Ens.BusinessService and the ADAPTER is set to EnsLib.File.InputAdaptor. Files are copied to the FilePath specified by the adapter. But if XYZ is invoked directly via CreateBusinessService, the files MUST be deposited to the default temporary director rather than the file path specified in FilePath of the adapter. Is it possible to the use the file path in FilePath when using CreateBusinessService?