Using BMP280 sensor to control servos. Need some guidance with coding

[mikami2020]

Thanks for the properly post code guidelines. I've fixed the original post to post the code correctly.
I will post a picture of the wiring later today.

As for the code, I intended to use it like this.

1. Have the BMP280 sensor detect the altitude as the rocket is going up.
2. When the sensor detects an altitude higher than my preset altitude, say 770 ft, a signal will send to control the servos.
3. The servos will then turn 90 degrees to pull open the flaps for a few seconds to increase the frontal surface area of the rocket to increase drag to slow down the rocket. And after a few seconds, the servo should return back to 0 degree and close the flaps.

I tried to test this by using the code I post, and I wrote the following lines hoping that it would achieve the goal. My serial monitor showed the altitude reading to be somewhere around -14.5 meter. I stood on a chair, also lifted the sensor to above my head, and the altitude reading changed; however, the servos didn't move. I tried putting the sensor on the floor as well; the reading changed, but the servo also didn't move.

@mikami2020

  if(Serial.print(F("Approx altitude >= -14.5"))) {
    
    Myservo1.write(90);
    Myservo2.write(90);
    Myservo3.write(90);
    
    
    digitalWrite(greenLed, HIGH);
    digitalWrite(redLed, LOW);
  
  }
  else{
   
    Myservo1.write(0);
    Myservo2.write(0);
    Myservo3.write(0);
    
    digitalWrite(greenLed, LOW);
    digitalWrite(redLed, HIGH);