Send Commands through Siri Shortcuts


i would like to send commands to an item with siri shortcuts.

I already configured this shortcut, but it doesnt work - would be great if you could help me to get it running.
The URL i used to call myopenhab is:
(I even tried to replace the . in the email adress with %40 - but it has no effect)

Thanks for your help!

Have a look here:

Where @Lucas figured out how to do it.
Best regards Johannes