Convert x-sim > simtools Tacho Controller Arduino e36 Tone

Hi,
now i controll my e36 cluster with x-sim and aruino uno.
(sample from here )

this work fine but i will use GameDash.
how can i convert ?

Arduino code:
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#include <Tone.h>

Tone kmh;
Tone rpm;

void setup() {
kmh.begin(2);
rpm.begin(3);
Serial.begin(38400);
}

void loop() {
if(Serial.available() > 0) {
char kind_of_data = Serial.read();
delay(1);
int Data100 = Serial.read() - '0';
delay(1);
int Data10 = Serial.read()- '0';
delay(1);
int Data1 = Serial.read()- '0';

//Daten anpassen: aus 1 wird 001, aus 10 wird 010 etc.
while (Data1 < 0) {
Data1 = Data10;
Data10 = Data100;
Data100 = 0;
}
int Data = 100*Data100 + 10*Data10 + Data1;

//Speed ausgeben
if (kind_of_data == 'S') {
int Speed = map(Data,130,250,10,318);

if(Speed > 316) {
Speed = 316;
}
if(Speed < 33) {
Speed = 0;
}
kmh.play(Speed);
}

//Drehzahl ausgeben
else if (kind_of_data == 'R') {

int Drehzahl = map(Data,0,630,0,270);
if(Drehzahl > 270) {
Drehzahl = 274;
}
if(Drehzahl < 25) {
Drehzahl = 25;
}
rpm.play(Drehzahl);
}
}
}
--------------------------------------------------------------------------------

x-sim config:








regards Andreas