Send Fn+Ctrl+Opt+Backspace to Parallels Desktop


I want to create a Touch Bar button to send keys to Parallels Desktop. In Parallels the shortcut for Ctrl-Opt-Del is Fn+Ctrl+Opt+Backspace.

So I created a button and tried to add this shortcut. But it doesn't work because Fn+Backspace = Del.
I added a new action before called fn pressed. But this also doesn't work.

Could anyone help me how I can get this shortcut to work?

Kind regards.