How to attach multiple servo's Particle Photon

I got one servo working using the example code builder, OK. But, how do I add additional Servo’s ? I’m using a slider with a virtual pin. No luck trying to define other pins.

My example code is below. FYI Particle already has the servo.h included
thanks
Randy

#include <blynk.h>
char auth[] = “950f…”;

Servo servo;
BLYNK_WRITE(V3)
{
servo.write(param.asInt());
}
void setup()
{
delay(5000); // Allow board to settle
Blynk.begin(auth);

servo.attach(D1);
}
void loop()
{
Blynk.run();
}