I want to see my digital piano as a plugin in Cubase

I have a Casio privia Px-5S digital piano

It has some cool sounds in its sound engine, and I would like to see its sound engine as a plugin in Cubase when my digital piano is connected to the computer via USB.

I want to do it only for live playing, so I’ll be able to navigate between software plugins and my digital piano sounds when I playing\practicing piano.

When I play piano I use a software piano called Pianoteq(I assume many here know it) and controlling it through my digital piano, but for most of the other sounds(strings, organs, electric pianos, etc…) most of the time I prefer the inner sounds I have in my digital piano than the sounds I have in sample libraries and VSTs(which was built for music production and not for keyboard rig).

So, how can I do it?

The manufacturer would have to build a VST plugin for the device, afaik.