Sending data from bolt to arduino via serial communication

Hi there!
Actually I want to print data in my arduino serial monitor from bolt using UART communication.
But whatever may be the value I give in SerialWrite(), The displayed output is always 0.
Why is it so??
Urgent help required!

i had a similar problem to my project to resolve this i did programming in arduino uno and gave the output to the bolt which was connected to cloud

can you tell me as I am facing problem in getting two sensor values from arduino to bolt
Can you please post your code for arduinno as well as python
thanks in advance

i had used this program for DHT 11 temperature sensor it is only for one sensor add another sensor code and try
#include <SoftwareSerial.h>
#include <DHT.h>

SoftwareSerial mySerial(2,3);

#define DHTPIN 8
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
void setup()
{
Serial.begin(9600);
mySerial.begin(9600);
dht.begin();
Serial.setTimeout(100);
}

String data;
uint8_t dataRead = 0;

void loop()
{
if (mySerial.available() > 0) {
delay(50);
String readData = “”;
Serial.print(“data”);
while (mySerial.available() > 0 ) {
readData = readData + (char)mySerial.read();
}
Serial.println(readData);
{
String data = sensor_data_to_push();
mySerial.print(data);
Serial.println(data);
Serial.print(data);
}
}
}

String sensor_data_to_push() {
String data;
float temp = dht.readTemperature();
data = String(temp);
return data;
}