Hi @enderocean,
MAVLink2REST does not distinguish between messages of the same type that have different values, so you’ll need to either poll for the latest NAMED_VALUE_FLOAT message at above the combined frequency of NAMED_VALUE_FLOAT messages and keep track of the value when the name field is PilotGain, or set up a websocket to receive all the updates, or set up and use an actual MAVLink endpoint that can receive and filter messages as relevant (via Pymavlink, or your parser library of choice).
In the BlueOS MAVLink Inspector you can see the structure of the message as provided by MAVLink2REST:
