 // Go to the Project Settings (nut icon).
 char auth[] = "YourAuthToken";
 
-// Attach virtual serial terminal to virtual pin 1
-WidgetTerminal terminal(1);
+// Attach virtual serial terminal to Virtual Pin V1
+WidgetTerminal terminal(V1);
 
 void setup()
 {

 * You can send/receive any data using WidgetTerminal object.
 *
 * App dashboard setup:
 *   Terminal widget on V1
 *
 **************************************************************/


  while (Blynk.connect() == false) {
    // Wait until connected
  }
  // This will print Blynk Software version to the Terminal Widget when
  // your hardware gets connected to Blynk Server
  terminal.println(F("Blynk v" BLYNK_VERSION ": Device started"));
  terminal.println("-------------");
  terminal.println("Type 'Marco' and get a reply, or type");
  terminal.println("anything else and get it printed back.");
  terminal.flush();
}

// You can send commands from Terminal to your hardware. Just use
// the same Virtual Pin as your Terminal Widget 
BLYNK_WRITE(V1) 
{

  // if you type "Marco" into Terminal Widget - it will respond: "Polo:"
  if (String("Marco") == param.asStr()) {
      terminal.println("You said: 'Marco'") ;
      terminal.println("I said: 'Polo'") ;
  } else {

  // Send it back
  terminal.print("You said:");
  terminal.write(param.getBuffer(), param.getLength());
  terminal.println();
  }

  // Ensure everything is sent
