Firemonkey Windows Main Menu - how to create a horizontal line separator?

Using 10.2.3 C++ to create a firemonkey Windows 32 application, how do I add a horizontal bar separator between two items on the main form pull down menu. Eg I have a "File" menu which when clicks opens up "Load" "Save" and "Exit". I want a horizontal bar between the "Save" item and the "Exit" item. Using VCL you just add a new item and set it to a dash and VCL does the rest. Not so with Firemonkey. So how do you do it? 

Regards Roger.