[SOLVED] MQTT Binding with Sonoff RF Bridge don't work

Hi all,

I’m struggling with the above topic likewise, as I migrate all MQTT things using the MQTT2 binding in preparation of Openhab3 and hope that anyone can help me.
The discussion here helped a lot, but the example on the RF Bridge doesn’t bring me further.

In my system MQTT2 is setup and running along MQTT1 for the time being
I’m able to operate all things on MQTT2, except the Sonoff RF Bridge.

Would maybe someone be able to share an advise how the item/thing needs to be configured, if the below was my MQTT1 config?

Switch RF433_Light_Kitchen "Licht Herd" <light> (EG_Light_Alle, Lights, EG_Licht_Kueche, EG_Kitchen)    	{ mqtt=">[broker:cmnd/sonoff-bridge/Backlog:command:ON:RfSync 10920; RfLow 390; RfHigh 1050; RfCode #000015],
            >[broker:cmnd/sonoff-bridge/Backlog:command:OFF:RfSync 10890; RfLow 390; RfHigh 1050; RfCode #000014]" , alexa="PowerController.powerState"}

Thanks in advance!
Kurt