Homekit thermostat

Does anyone know how to create a thermostat in Homekit automation? I created a Siri shortcut that does the trick but since the variable for the temperature setting is stored in my iCloud Drive folder (dictionary) the rest of the family can't access that. There seems to be no link between Siri Shortcuts and Homekit. It would be nice to create the same automation in Homekit as in Siri Shortcuts.
Homekit thermostat
 
 
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