UNO Detecting 24 vac via TWO OF optocoupler (HCPL3700) not working

Projects Programming
6

when i removed footnote line, the code function properly. (LED is ON & OFF as my expectation)

const int sensorPin = 10;
const int sensorPin1 = 11;

const int ledPin =  13;
const int ledPin1 =  12;

int lastSensorState;
int currentSensorState;
int stateChangeCnt = 0;
int lastSensorState1;
int currentSensorState1;
int stateChangeCnt1 = 0;


void setup()
{
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);
  pinMode(sensorPin, INPUT);
  pinMode(ledPin1, OUTPUT);
  digitalWrite(ledPin1, LOW);
  pinMode(sensorPin1, INPUT);
  Serial.begin(9600);
}

void loop()

    /////////// 1st optocoupler
{
  currentSensorState = digitalRead(sensorPin);

  **if (currentSensorState != lastSensorState)**
**  {**
**    Serial.print(stateChangeCnt);**
**    Serial.print(" : ");**
**    Serial.print(currentSensorState);**
**    Serial.print(" : ");**
**    Serial.print(lastSensorState);**
**    Serial.print("\r\n");**

    if (currentSensorState == HIGH )
      digitalWrite(ledPin, LOW);

    else if

    (currentSensorState == LOW )
      digitalWrite(ledPin, HIGH );

    lastSensorState = currentSensorState;
    stateChangeCnt++;


    /////////// 2nd optocoupler

    currentSensorState1 = digitalRead(sensorPin1);

    if (currentSensorState1 != lastSensorState1)
    {
      Serial.print(stateChangeCnt1);
      Serial.print(" : ");
      Serial.print(currentSensorState1);
      Serial.print(" : ");
      Serial.print(lastSensorState1);
      Serial.print("\r\n");

      if (currentSensorState1 == HIGH)
        digitalWrite(ledPin1, LOW);

      else if


      (currentSensorState1 == LOW )
        digitalWrite(ledPin1, HIGH);

      lastSensorState1 = currentSensorState1;
      stateChangeCnt1++;
    }
  }
}