kumoapp temperature change and time period

[evan.c...@gmail.com]

Hi, 

I would like to create a kumoapp that alerts when big swings in temperature take place. 

For example a room increases or decreases 3 degrees in a two hour period.

how could I add the time component to this code?

var tags = <#temperature sensors_[12]_N#>;

var step = 3<%minimum °C change to trigger transmission_N%>;

   tags.forEach(

function (tag) {

    tag.setTempSensorThresholds(tag.temperature-step, tag.temperature+step);

    tag.temperatureCross = function () {

        KumoApp.Log(this.name + " is " + this.temperature + "°C")

        if (this.tempState==2)// too high

        {

            this.setTempSensorThresholds(this.lowTh+step, this.highTh+step)

        }

        else if(tag.tempState==3)  // too low

        {

            this.setTempSensorThresholds(this.lowTh-step, this.highTh-step)

        }

    };

});