How to make Fpa Glide Angle follow?

[simonedestradis]

Hi everyone, don't have a GPS yet, so I'm trying RNAV approaches with NAV and FPA (-3.0° for example).
Just before the final descent, say 2000 ft, I move the EFIS wheel to change the m/da on FPA, and the Glide Angle value appears. I also activate the FD/FPV, but when I rotate the VS wheel to DN, the VS value remains and the aircraft follows that, and the PFD only displays the VS value and not the FPA.
I don't understand, if it's possible, how to make the aircraft follow the FPA angle.
Or does it only use the VS for these approaches and is the FPA just a reference in the PFD? Thanks

[Mark]

The FPV flight director setting is purely a visual aid - it has no autopilot-coupled mode. RNAV approaches can be flown in PROF mode, but are more commonly flown in VS mode.

Mark - Just Flight

[simonedestradis]

Yes, in fact, I imagined they were just a visual aid.
Thanks