Gamma_Direct not working

Das ist der Fehler:

{
  "debug": {
    "camera_index": 1,
    "camera_port": 0,
    "carrier_error": "None",
    "carrier_status": "Done",
    "command": "Gamma_Direct",
    "parameter": {
      "value": 0
    },
    "received_payload": [
      96,
      65
    ],
    "response_state": "Init",
    "send_payload": [
      1,
      4,
      75,
      0,
      0,
      0,
      0
    ]
  },
  "error": {
    "detail": {
      "visca_error": 65,
      "visca_error_name": "CommandNotExecutable"
    },
    "message": "protocol error",
    "type": "visca_command"
  },
  "status": "error"
}

Auf den Befehl:

{
  "camera": {
    "index": 0,
    "port": 0
  },
  "command": "Gamma_Direct",
  "parameter": {
    "value":0
  },
  "debug":1
}