I may need to add that you need the very latest version (less than 1 week old) of Openhab in order to use these cloud commands…
and… they may need some more parameters…
If you really want to know, there is a hacked mihome version from ‘vevs’ ЗАПИСКИ ЛЕНИВОГО ЭНТУЗИАСТА: Модифицированный Mi Home с переводом действий, условий и статусов (русский и английский языки) which allows to switch on debugging and logging of commands to your sd. This reveils what is the communication. These can than be repeated with openhab. (note. usual caution applies for installing apks from unknown source)