The Ability to Make a Rule to Control the Fan on the Thermostat

There might already be a way to do this......

I would like a way to have a rule control the fan on my thermostat. I would like to have it turn on every hour for a few minutes each hour to circulate the air in my house. The thermostat is upstairs and the basement can get cool so having the fan run every hour helps stabilize temperature in the whole house. Also I would like a way to program the rule not to run if the fan is already running. I have only made rules using scenes, but there is not option to change anything on the thermostat during a scene but Heat and Cool temps. Any ideas?

using System;
using System.Collections.Generic;
using System.Text;
using MLS.ZWave.Service.Rules;
using MLS.ZWave.BusinessObjects;
using MLS.HA.DeviceController.Common.Device.ZWave;
using System.Threading;

///

///
/// IMPORTANT READ THIS!
///
/// ALWAYS MAKE COPIES OF SCRIPTS YOU INTEND TO CUSTOMIZE OR YOUR CHANGES
/// COULD BE LOST.
///
/// **********************
/// This script checks if the thermostat fan is on, and if not, turns it on
/// and runs it for a pre-defined amount of time before turning it off
/// again.
/// **********************
///
///

public class ThermostatFanRunTimed : ScriptBase, ScriptInterface {
public void runScript() {
try {
// Change this to match the nodeId of your thermostat
var thermostatNodeId = 67;

// Change this to match how long to run the fan
var runTimeMinutes = 10;

// *************
// Be careful if changing anything below here
// *************
var thermostatDevice = getNode(thermostatNodeId) as Thermostat;

// Activate the fan if it isn't already running
if (thermostatDevice.thermostatFanState != MLS.HA.DeviceController.Common.ThermoFanState.On) {
// Turn the fan on
dm.setZWaveThermostatFanMode(thermostatDevice.deviceId, MLS.HA.DeviceController.Common.ThermoFanMode.On);

// Sleep for a bit to let the fan run, then turn it off
Thread.Sleep(runTimeMinutes * 1000);

// Turn the fan off
dm.setZWaveThermostatFanMode(thermostatDevice.deviceId, MLS.HA.DeviceController.Common.ThermoFanMode.Auto);
}

} catch (Exception ex) {
// Log the exception here
writeFileLog("Error during thermostatFanRunTimed script", ex);
}
}
}