Not Recognizing heatingCoolingStateValues in thermostat accessory

[MileRock]

Good Day! Thanks to you all for an awesome open source tool! I have successfully deployed Homebridge, with some simple accessories (doorbell, temperatureSensors, switch and thermostat). However, I am unable to get Homebridge or HomeKit to recognize non-standard values of heatingCoolingStateValues in the thermostat accessory. When I set the non-standard values by an array of strings (as shown below), it still shows me the standard values of ["OFF", "AUTO", "HEAT", "COOL"]. I have restarted after making the changes. Am I doing something incorrect or is this an issue?

My thermostat JSON config is below, and I am currently using the following: Homebridge v1.3.8, Node.js v14.16.0, and NPM v6.14.11. I see no errors in the terminal on the Homebridge Status page.

Thank you for your time!!

{
    "type": "thermostat",
    "name": "_HOSTNAME_",
    "url": "_IP ADDRESS_",
    "username": "_USER_",
    "password": "_PASSWORD_",
    "heatingCoolingStateValues": [
        "OFF",
        "AUTO",
        "SCHEDULE",
        "FAN",
        "HEAT"
     ],
    "topics": {
        "getCurrentHeatingCoolingState": "HVAC/current_state",
        "getCurrentTemperature": "temperature/living",
        "getTargetHeatingCoolingState": "HVAC/get_target",
        "setTargetHeatingCoolingState": "HVAC/set_target",
        "getTargetTemperature": "HVAC/get_temp",
        "setTargetTemperature": "HVAC/set_temp"
    },
    "accessory": "mqttthing"
}

[rbswift]

heatingCoolingStateValues should be an array of 4 (not 5) values to be used to represent Off, Heat, Cool and Auto respectively

[MileRock]

Ok. Thanks for that info! I updated the JSON as follows:

"heatingCoolingStateValues": [
                "OFF",
                "HEAT",
                "FAN",
                "AUTO"
            ]

However, it is still only showing me the "OFF", "HEAT", "COOL", and "AUTO" options. Though I do note, that now the accessory is sending "FAN" as the MQTT message to topic "HVAC/get_target". What I am thinking, is that there is no way to edit the UI for the thermostat accessory (i.e. so I can see the "FAN" option in HomeKit)?

[rbswift]

This setting does not change what you see in the Home app. That's fixed by Apple and not able to be changed. This setting only changes the MQTT side.

[MileRock]

Understood. Thanks @rbswift for the prompt and helpful replies!