I have a working arduino project that uses a waterproof temp sensor to check the temp of my hot tub and turn off the outlet if it overheats. I'm now trying to add a ThingShield and use this device handler to display the current temp in a tile. I have the ThingShield connected in the ST App, and I've added this device handler via the IDE and set the ThingShield to use it. Unfortunately, the tile always shows "--". In my Arduino sketch, I'm already sending the temp to the serial port as a string every 30 seconds, and I can see it fine in the Serial Monitor. Is there something I need to add to my sketch in order to get that temp value to be picked up by this device handler so that the value shows up in the ThingShield tile? Any help would be greatly appreciated! Thank you.