I doubt that the keyboard shortcut feature is designed to work with a single character as the shortcut. Try to involve some modifier key, e.g. <Ctrl>, <Alt> or <Super> similarly as the predefined shortcuts.
I doubt that the keyboard shortcut feature is designed to work with a single character as the shortcut. Try to involve some modifier key, e.g. <Ctrl>, <Alt> or <Super> similarly as the predefined shortcuts.