[SOLVED] KNX - 'general off' command

Hello,
I’m new to this, but first setup went well without big problems.

And then i wanted to set a ‘general off’ command to my project.
I cannot find how i can do this.
I want to send a group command that does the same as my physical button that makes the ‘general off’.

How can i do this?

already thanks!

Easiest way would be, to define a channel (when using knx2 binding) with the general OFF GA. Then link a switch Item to it. setup the the sitemap to show the Item not as a switch but as a button.
knx.things:

Type switch : allOff "switch all off" [ ga="15/7/255" ]  // this is the all off GA

knx.items:

Switch GeneralOff "All Off" { channel="knx:device:bridge:thing:allOff", autoupdate="false" }  //use correct bridge and thing name

sitemap:

Switch item=GeneralOff mappings=[OFF="All OFF!" ]

This works…
Thank you very much!