DGN import settings through variable or registry key

[Michiel.Valcke]

Hello everyone,

For a project I'm in the process of creating a routine that among other things, does a batch conversion from DGN files to DWG.

While doing the conversion there are several settings that might need to be switched depending on the name/location of the DGN files. These settings are those encountered when using the DGNIMPORT command. 

I have found how to set most of these settings (either through the DGNIMPORTMODE system variable or during a call to the -DGNIMPORT command)

But for two settings in particular I have not found a corresponding system variable or registry key that I can change with the lisp routine.

Does anybody know how I can set the External DGN references and the explode text nodes settings with lisp?