[Solved]Code verify issue

I have no previous experience of code. However, I found this code in the forum, which I think will help me, with my first project, yes I know I went where angels fear to tread.
When I verify the code it says regarding line 70. [ If (totalMilliLitres > 400);] "If was not declared in this scope". I suspect I need to input a statement or value in the setup part, of maybe change a figure to pulses to make for logic in the text. I have read for hours and hours on the internet and many more in these forums to no avail. Some guidance would be most appreciated. thank you.

int sensorInterrupt = 0;  // interrupt 0
int sensorPin       = 2; //Digital Pin 2
int relay = 5; // Digital pin 5
unsigned int SetPoint = 400; //400 milileter

/*The hall-effect flow sensor outputs pulses per second per litre/minute of flow.*/
float calibrationFactor = 4.5; //You can change according to your datasheet

volatile byte pulseCount =0;  

float flowRate = 0;
unsigned int flowMilliLitres =0;
unsigned long totalMilliLitres = 0;

unsigned long oldTime = 0;

void setup()
{

  // Initialize a serial connection for reporting values to the host
  Serial.begin(9600);
  pinMode(relay, OUTPUT);
  pinMode(sensorPin, INPUT);
  digitalWrite(sensorPin, HIGH);

  /*The Hall-effect sensor is connected to pin 2 which uses interrupt 0. Configured to trigger on a FALLING state change (transition from HIGH
  (state to LOW state)*/
  attachInterrupt(sensorInterrupt, pulseCounter, FALLING); //you can use Rising or Falling
}

void loop()
{

   if((millis() - oldTime) > 1000)    // Only process counters once per second
  { 
    // Disable the interrupt while calculating flow rate and sending the value to the host
    detachInterrupt(sensorInterrupt);

    // Because this loop may not complete in exactly 1 second intervals we calculate the number of milliseconds that have passed since the last execution and use that to scale the output. We also apply the calibrationFactor to scale the output based on the number of pulses per second per units of measure (litres/minute in this case) coming from the sensor.
    flowRate = ((1000.0 / (millis() - oldTime)) * pulseCount) / calibrationFactor;

    // Note the time this processing pass was executed. Note that because we've
    // disabled interrupts the millis() function won't actually be incrementing right
    // at this point, but it will still return the value it was set to just before
    // interrupts went away.
    oldTime = millis();

    // Divide the flow rate in litres/minute by 60 to determine how many litres have
    // passed through the sensor in this 1 second interval, then multiply by 1000 to
    // convert to millilitres.
    flowMilliLitres = (flowRate / 60) * 1000;

    // Add the millilitres passed in this second to the cumulative total
    totalMilliLitres += flowMilliLitres;

    unsigned int frac;

    // Print the flow rate for this second in litres / minute
    Serial.print("Flow rate: ");
    Serial.print(flowMilliLitres, DEC);  // Print the integer part of the variable
    Serial.print("mL/Second");
    Serial.print("\t");           

    // Print the cumulative total of litres flowed since starting
    Serial.print("Output Liquid Quantity: ");        
    Serial.print(totalMilliLitres,DEC);
    Serial.println("mL"); 
    Serial.print("\t"); 
            
    If (totalMilliLitres > 400);

    {
      SetRelay();
    }
// Reset the pulse counter so we can start incrementing again
    pulseCount = 0;

    // Enable the interrupt again now that we've finished sending output
    attachInterrupt(sensorInterrupt, pulseCounter, FALLING);
  }
}

//Insterrupt Service Routine

void pulseCounter()
{
  // Increment the pulse counter
  pulseCount++;
}

void SetRelay()
{
  digitalWrite(relay, HIGH);
}

"if" not "If"

Thank you so very much.

This is my first post here how do I mark it solved?

Flowsensor:
Thank you so very much.

This is my first post here how do I mark it solved?

It's not your first, but you can go back to the original post, click on "modify" and edit the title to add "[solved]"