remote Power not working on kde6

[wmbruckner]

the code used for Shutdown and reboot is no longer working in kde6.
in KDE6, apparently the following code is used:

qdbus org.kde.LogoutPrompt /LogoutPrompt org.kde.LogoutPrompt.promptLogout
qdbus org.kde.LogoutPrompt /LogoutPrompt promptReboot
qdbus org.kde.LogoutPrompt /LogoutPrompt promptShutdown

to get a prompt

or

qdbus org.kde.Shutdown /Shutdown org.kde.Shutdown.logout

logoutAndReboot
logoutAndShutdown

to perform an action without prompt.

I tried to change the code of the remote, but didn't succeed. Any ideas?