B4R Question Send serial data via USB - string "HALLO" - from B4R and receive � in B4J

#Region Project Attributes
    #AutoFlushLogs: True
    #CheckArrayBounds: True
    #StackBufferSize: 300
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'Public variables can be accessed from all modules.
    Public Serial1 As Serial
    
    Dim x, y As Int = 0
    Dim a0, a1 As Pin
    
    Dim TOPMARGIN As Int = 700
    Dim BOTTOMMARGIN As Int = 200
    
End Sub

Private Sub AppStart
    Serial1.Initialize(19200)
    Log("AppStart")
    a0.Initialize(a0.A0, a0.MODE_INPUT)
    a1.Initialize(a1.A1, a1.MODE_INPUT)

    AddLooper("myLooper")
    
End Sub

Sub myLooper
    
    x = a0.AnalogRead
    y = a1.AnalogRead
    
    Delay(100)
        
    If(x > TOPMARGIN And y > TOPMARGIN) Then
        If(x>y) Then
            Log("left")
        Else
            Log("down")
        End If
    else if(x > TOPMARGIN And y < TOPMARGIN) Then
        If(x>y And y>125) Then
            Log("left")
        Else
            Log("up")
        End If
    else if(x < BOTTOMMARGIN And y < BOTTOMMARGIN) Then
        If(x<y And y>125) Then
            Log("right")
        Else
            Log("up")
        End If
    else if(x < BOTTOMMARGIN And y < BOTTOMMARGIN) Then
        If(x>y And x>125) Then
            Log("down")
        Else
            Log("right")
        End If
    else if(x>TOPMARGIN) Then
        Log("left")
    else if(x<BOTTOMMARGIN) Then
        Log("right")
    else if(y>TOPMARGIN) Then
        Log("down")
    else if(y<BOTTOMMARGIN) Then
        Log("up")
    Else
        Log("stop")
    End If 
    

End Sub

import processing.serial.*;
Serial myPort;  // Create object from Serial class
String val;     // Data received from the serial port

// I know that the first port in the serial list on my mac
// is Serial.list()[1].
// On Windows machines, this generally opens COM1.
// Open whatever port is the one you're using.
// Execute the project and if don't work in the console you can see the array of the Serial ports and identify the number in the array and choose the correct.

void setup(){
  //Change here the number of the port
  String portName = "COM46";
 
  printArray(Serial.list());
  size(500,500);
  println(portName);
  myPort = new Serial(this, portName, 19200);
  println(portName);
}
 
void draw()
{
  if ( myPort.available() > 0)
  {  // If data is available,
  val = myPort.readStringUntil('\n');
 
    if(val!=null && val.contains("left")){
      PImage img;
      img = loadImage("images/left.png");
      background(img);
      println("left");
    }else if (val!=null && val.contains("right")){
      println("right");
      PImage img;
      img = loadImage("images/right.png");
      background(img);
    }else if (val!=null && val.contains("up")){
      println("up");
      PImage img;
      img = loadImage("images/up.png");
      background(img);
    }else if (val!=null && val.contains("down")){
      PImage img;
      img = loadImage("images/down.png");
      background(img);
      println("down");
    }
    
  }
}