Expand Instrument range (sound)

Hi everyone! Is there a way in Dorico/ HallionSonic to expand the SOUND of the Horns up to F4 (not just the written range, I know how this works!!). Thanks in advance.

The horn in Halion Symphonic Orchestra (HSO) goes up to G4. In the Halion Sonic VST, replace each Horn patch from Iconica Sketch with the Horn Combi patch from HSO, and change the expression map used by each horn in Play mode to HSO Horn Solo.

thanks a lot John! That worked!!!