Help me overcome Blynk limitations

I recently came to know that Blynk has restrictions with delay. I want to blink 3 leds one after other like traffic signal lights with 1 sec frequency. Below is the code which is run on arduino normally. How can I do that without delay in Blynk. Please help me how to write that one line.

#include <SoftwareSerial.h>
SoftwareSerial DebugSerial(2, 3); // RX, TX

#include <BlynkSimpleStream.h>

BlynkTimer timer;

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "bML9YS";

const int Green=2;
const int Orange=3;
const int Red=4;

void setup() 
pinMode(2, OUTPUT); 
pinMode(3, OUTPUT); 
pinMode(4, OUTPUT); 

  Blynk.begin(Serial, auth);

void loop() 
 if(param.asInt() == 1)
digitalWrite(2, LOW);digitalWrite(3, LOW);digitalWrite(4, HIGH); delay(2000);
digitalWrite(2, LOW);digitalWrite(3, HIGH);digitalWrite(4, LOW); delay(2000);
digitalWrite(2, HIGH);digitalWrite(3, LOW);digitalWrite(4, LOW); delay(2000);
digitalWrite(2, LOW);digitalWrite(3, LOW);digitalWrite(4, LOW); 

2 posts were merged into an existing topic: Compliation error. Please help. I just want to blink 3 lights