Turn heating (Nest) to a certain temperature - is it possible with voice assist?

I’m trying to encourage family members to use Voice assist on the new M5stacks so I can start to remove the many Alexa devices throughout the house. However my wife likes to control the heating by being able to turn the Nest thermostat up and down by voice through Alexa. - ie “Turn the heating to 22 degrees”. I take it this is too advanced at the moment for Voice Assist and I won’t be able to do this yet?