Thermostat Google Assistant

Good evening everyone,

I’m trying to configure the thermostat with google assistant, and to change the operating modes of the thermostat, but I don’t understand how to do it, I’ll bring you part of the configuration, if anyone can help me.

thanks
/ls

sitemaps

Text label="Riscaldamento" icon="radiator" {
		
		Selection item=FF_Boiler_Modo label="Funzionamento" mappings=[0="Manuale",1="Automatico",2="Presenza",3="Pres+Aut",4="Arieggiare"]
		Setpoint item=FF_Boiler_Heating step=1 minValue=10 maxValue=30 icon="heating"
		Setpoint item=FF_Boiler_minima step=1 minValue=10 maxValue=30 icon="temperature_cold"
		Setpoint item=FF_Boiler_massima step=1 minValue=10 maxValue=30 icon="temperature_hot"
		Default item=FF_Boiler_Stato label="Stato Caldaia [%s]" icon="fire"
    
}

items

Group 	 g_FF_Boiler_TSTAT 				"Termostato" 									{ ga="Thermostat" [ thermostatTemperatureRange="10,30", modes = "off = OFF: Arieggiare, heat = COMFORT: Manuale, eco = ECO:Pres+Auto, on = ON:Presenza, auto" ] }
Number   FF_Boiler_Heating              "Riscaldamento [%.1f °C]"      				    (g_FF_Boiler_TSTAT)          					        {ga="thermostatTemperatureSetpoint"}
Switch	 FF_Boiler_Stato				"Stato Caldaia [%s]"										 (FF_Boiler) 								{channel="mqtt:topic:caldaia:stato_caldaia"}
Number   FF_Boiler_Modo                 "Funzionamento" 					  	 (g_FF_Boiler_TSTAT)											{ ga="thermostatMode" }	
Number	 FF_Boiler_minima				"Temperatura Minima [%.1f °C]" 				    (g_FF_Boiler_TSTAT)										{ ga="thermostatTemperatureSetpointLow" }		
Number   FF_Boiler_massima				"Temperatura Massima [%.1f °C]" 				    (g_FF_Boiler_TSTAT)									{ ga="thermostatTemperatureSetpointHigh" }
Number   FF_FamilyRoom_Temperature      "Temperatura Soggiorno [%.1f °C]"   			    <temperature>(g_FF_Boiler_TSTAT)  					        {channel="mqtt:topic:temperature:temperatura_soggiorno", ga="thermostatTemperatureAmbient"}
Number   FF_FamilyRoom_Humidity         "Umidità Soggiorno [%.0f %%]"       			      <humidity> (g_FF_Boiler_TSTAT)            						{channel="mqtt:topic:humidity:umidita_soggiorno", ga="thermostatHumidityAmbient"}