He was moved to the Bureau of Topography of the Committee of Public Safety and sought unsuccessfully to be transferred to Constantinople in order to offer his services to the Sultan.
Následne bol prevelený do Miestopisného úradu Výboru pre verejnú blaho a neúspešne sa snažil o preloženie do Konštantínopola, kde chcel ponúknuť svoje služby sultánovi.