Thermostat temperatureSensorCount

I am trying to develop a small plugin that will read the temperatures from a specialised ventilation controller. It has 9 different temperature sensors so I have created a device based on the indigo.thermostat device but I can not work out how I change the temperatureSensorCount property.

Can anyone help me?
Thank you
Colin

I decided to look again at the example Thermostat device in the SDK and I found the NumTemperatureInputs field in the device.xml that sets the number of sensors.
I was just confused by the different names for the same thing "temperatureSensorCount" and "NumTemperatureInputs".

All working now, great.
Colin