I should have spelled out that you also have to add it to the X-Ayatana-Desktop-Shortcuts
Like this:
X-Ayatana-Desktop-Shortcuts=Compose;Contacts;Calendar;
I should have spelled out that you also have to add it to the X-Ayatana- Desktop- Shortcuts
Like this:
X-Ayatana- Desktop- Shortcuts= Compose; Contacts; Calendar;