How to manipulate input numbers

Need Help With My Project
10

Hi, I am using the Particle Photon and the particle web IDE,
Is this any better :grimacing:
Simeon

int pressuresensorPin = A4;
float pressureSensorPin;  
float waterLevel;

#define BLYNK_PRINT Serial  

#include <blynk.h>
char auth[] = "Auth Code";

BlynkTimer timer;

void myTimerEvent() 
{
Blynk.virtualWrite(V1, millis() / 1000);
}

void setup()
{
    Serial.begin(9600);
 
     Blynk.begin(auth);
     
    timer.setInterval(1000L, myTimerEvent); 
}
BLYNK_WRITE(V1) {


waterLevel = (pressureSensorPin / 25.0) - 20.0;
Blynk.virtualWrite(V1, waterLevel);
    }

void loop()
{
    Blynk.run();
    timer.run();
}