Unable to send serial data to Arduino

Hi,

I'm trying to get the 'SendTextToSerialDevice' example to work with the Arduino using the Send Serial Data node.

I have an Arduino sketch that reads serial data with a baud rate of 9600 but there doesn't seem to be any data sent for some reason because Serial.available() returns 0.

const unsigned int MAX_MESSAGE_LENGTH = 4;

void setup() {
 Serial.begin(9600);
}

void loop() {
  //Serial.println(Serial.available());
 //Check to see if anything is available in the serial receive buffer
 while (Serial.available() > 0)
 {

   //Create a place to hold the incoming message
   static char message[MAX_MESSAGE_LENGTH];
   static unsigned int message_pos = 0;

   //Read the next available byte in the serial receive buffer
   char inByte = Serial.read();

   //Message coming in (check not terminating character) and guard for over message size
   if ( inByte != '\n' && (message_pos < MAX_MESSAGE_LENGTH - 1) )
   {
     //Add the incoming byte to our message
     message[message_pos] = inByte;
     message_pos++;
   }
   //Full message received...
   else
  {
   //Add null character to string
   message[message_pos] = '\0';

   //Print the message (or do other things)
   //Serial.println(message);

   //Or convert to integer and print
   int number = atoi(message);
   Serial.println(number);

   //Reset for the next message
   message_pos = 0;
  }
  //delay(100);
 }
}

The Arduino sketch works fine since it receives data from the serial window. I have tried using the Configure Serial Device node but I still have no data sent to the Arduino. I have also correctly selected the USB port on the Send Serial Data node.

Has someone had success using the Send Serial Data node?