Openhab and UPD for Brematic gateway


I just installed openhab on my Raspberry pi and have now some issues to send raw date to my Brematic gateway. I found some stuff about to add an udp command with on /off values into the demo.items.
My configured switch shows up but does not send anything to my gateway. Openhab is justout of the box with demo files… what needs to be done to get signals send via upd to my Brematic gateway?

I used connair till today and have all valid txp raw data available.

Thanks for your help
With kind Regards