m = 
             Name: 'A1'
          Comment: 'This is a A1message'
               ID: 419364350
         Extended: 1
            J1939: [1x1 struct]
           Length: 8
          Signals: {2x1 cell}
       SignalInfo: [2x1 struct]
          TxNodes: {'AerodynamicControl'}
       Attributes: {4x1 cell}
    AttributeInfo: [4x1 struct]

s = 
             Name: 'EngGasSupplyPress'
          Comment: 'Gage pressure of gas supply to fuel metering device.'
         StartBit: 8
       SignalSize: 16
        ByteOrder: 'LittleEndian'
           Signed: 0
        ValueType: 'Integer'
            Class: 'uint16'
           Factor: 0.5000
           Offset: 0
          Minimum: 0
          Maximum: 3.2128e+04
            Units: 'kPa'
       ValueTable: [4x1 struct]
      Multiplexor: 0
      Multiplexed: 0
    MultiplexMode: 0
          RxNodes: {'Aftertreatment_1_GasIntake'}
       Attributes: {3x1 cell}
    AttributeInfo: [3x1 struct]

vtt =
pump error