Dell Command Update 4.9 distribution. How can the Bios Password be given?

Hello, we currently want to distribute Dell Command 4.9 via Microsoft Endpoint.
We have distributed the program and the configuration. No problem.

All our laptops bios are password protected.

How can I give this password to the application. The Regestry key under Ndo-0677\HKEY_LOCAL_MACHINE\SOFTWARE\Dell\UpdateService\Clients\CommandUpdate\Preferences\Settings\General\BiosPassword alone is apparently not sufficient, since always a message comes, that the bios password is wrong.

Please help