Nestion Serial Event

int power_btn_read[7];
int FanPosition;
uint8_t temp[8] = {0}, dataReceive_nextion[7] = {0};
boolean PowerStatus ;

void setup()
{
 Serial.begin(9600);
 Serial1.begin(9600);
 memset(temp, 0, sizeof(temp)); // reset array
}

void loop()
{
   /*- - - Check which button is pressed - - -*/
 // ON OFF Button
 if((dataReceive_nextion[0] == 101 && dataReceive_nextion[1] == 0 && dataReceive_nextion[2] == 15 && dataReceive_nextion[3] == 0))
 {
  Serial.println("You press the POWER button");
  memset(dataReceive_nextion, 0, sizeof(dataReceive_nextion)); // reset array
  Serial1.print("get power_btn1.val");
  Serial1.write(0xff);
  Serial1.write(0xff);
  Serial1.write(0xff);
  memset(temp, 0, sizeof(temp)); // reset array
  Serial1.readBytes(temp, 8);
  if(temp[0] == 113 && temp[1] == 0){PowerStatus = false;}
  else if(temp[0] == 113 && temp[1] == 1){PowerStatus = true;}
 }

if(PowerStatus == true && temp[1] == 1)
 {
  temp[1] = 0;
  //Serial.println("The System is ON");
  Serial1.print("power_btn1.val=");
  Serial1.print(1);
  Serial1.write(0xff);
  Serial1.write(0xff);
  Serial1.write(0xff);
 }
 else if(PowerStatus == false && temp[1] == 0)
 {
  temp[1] = 1;
 //Serial.println("The System is OFF");
  Serial1.print("power_btn1.val=");
  Serial1.print(0);
  Serial1.write(0xff);
  Serial1.write(0xff);
  Serial1.write(0xff);
 }

void serialEvent1()
{
  int inChar;
  while (Serial1.available())
  {
    // get the new byte:
    Serial1.readBytes(dataReceive_nextion, 7);
  }
}