Yes that is exactly what I do and it works like a champ. Since Amazon Echo can’t access the ST Goodbye! routine directly you need to setup a virtual switch (momentary button tile) and called it “Security System” I then use @MichaelS smart app called Alexa Helper so that the Amazon Echo can trigger the virtual switch by just saying “Alexa, turn on security system” One of the settings in the amazing Alexa Helper app is “Delay in minutes” which I set it to 1 minute. The other setting in Alexa Helper is when the virtual switch is triggered I then set the “Perform this routine” to Goodbye! which arms the system. If you haven’t done virtual switches with Amazon Echo yet @JDRoberts has an awesome tutorial FAQ: Using Echo to Change a Mode or Run a Routine that you can read here [DEPRECATED] 2015 Voice Assistant Run Routine FAQ--see 2017 FAQ instead It was really helpful for newbies like me.