How to control the JSON formatter with the API and send it to the application server in hexadecimal using MQTT communication

Application Development MQTT
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I’m currently investigating whether this is possible using TTN.
I’m looking into the following two points:

  1. Is it possible to send data to an application server in hexadecimal format using MQTT communication from TTN without using the JSON formatter?

  2. Is it possible to control the JSON formatter via API?

If possible, I’d appreciate it if you could also provide me with a useful URL.

Thank you for your confirmation.

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  1. No.
  2. No.

What is possible is documented at [https://www.thethingsindustries.com/docs/](https://www.thethingsindustries.com/docs/)