Yeah, we’re working on updating that code so that it uses the new Dash API. Give us a couple days to get that out.
Note that all the sketch will do once we update it will be to send data to the cloud. I saw your other post that you’re trying to send AT commands directly to the modem. We have a new API specifically for doing this and will post more information about that soon.
However, you may want to take a look at our docs. If all you want to do is receive SMS, we have a good way to do that now: https://hologram.io/docs/reference/dash/api/#hologramcloud-attachhandlersms-sms_handler-
Also, take a look at the example code available in the Arduino IDE by doing “File->Examples->Examples For Dash” (you may need to update your IDE for them to show up.) There might be some useful items in there for you.