Silktest workbench cannot access the ribbon buttons inside of the ribbon tool bar

I am using the silktest workbench .net script to automate my testing. One issue I encountered was that I was not able to access the ribbon buttons inside of the ribbon tool bar. The application was win32 based. when I recorded my first script to capture the objects on the GUI, I noticed if I try to click on the ribbon button in the ribbon tool bar, it could only record as a click action using coordinations. Looks like something below

".Control("@caption='Coherence'").Click(MouseButton.Left, New Point(459, 14))"

What I expected was a proper child object name, type (e.g. button) or any unique identifier of the child object inside the ribbon. Looks like it cannot recognize those ribbon child objects

Relying on clicking on (x,y) is not a reliable solution for me. Could anyone give me some idea?

Thanks