need help programming value of proximity sensor to sweep servo arm

Tried this:

  if (vcnl.readAmbient() < 100);
  TinyServo.write(90);
  digitalWrite(ledPin, HIGH);

  {
    TinyServo.write(70);
    digitalWrite(ledPin, LOW);//
  }

Led did not come on when I put my hand over the sensor. : (
Where did I go wrong?

/*  Created by Nick Sebring: November 2017
    This sketch is designed to activate a barcode reader by moving a chart in front of
    the VCNL4010 I2C Proximity sensor.  Thus triggering the servo to move a magnet over the sensor
    in the handle of the barcode reader, activating the barcode readers infared scanner.  Thus avoiding
    to reach across my desk and having to pull the trigger.  How lazy can us humans be?   Hahahaha
    The SCL and SDA are connected to A4 & 5 of my Arduino Uno

    After getting this to work, it's being ported to a trinket. So, I'll have to ditch the "serial".
*/
#include <Wire.h>
#include "Adafruit_VCNL4010.h"
#include <Adafruit_SoftServo.h>
Adafruit_VCNL4010 vcnl;
Adafruit_SoftServo TinyServo;// Name servo instead of servo1,2 etc.
//#define TinyServo 7// Creates Servo object for magnet

int pos = 0;              //  Variable to store the servo position
int a = 0;                //just a variable to check the current value of sensePin

// Creating speed settings for the servos sort of like PWM
int servoDelay1 = 25;     //  Creates servo delay speed=25 in miliseconds
int servoDelay2 = 50;     //  Creates servo delay speed=50 in miliseconds
int servoDelay3 = 150;    //  Creates servo delay speed=150 in miliseconds
const int ledPin = 7;// LED to notify servo sketch is working
//pinMode(8, INPUT_PULLUP);//   CONNECT Servo to pin *


void setup() {
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);// Set led off at start-up


  Serial.begin(9600);
  Serial.println("VCNL4010 test");

  if (! vcnl.begin()) {
    Serial.println("Sensor not found :(");
    while (1);
  }
  Serial.println("Found VCNL4010");

  Wire.begin();
  TinyServo.attach(7);   // attaches the servo on pin 7 to activate barcode reader
  TinyServo.write(90);   // SET THE INITIAL SERVO POSITION AT POWER-UP
}

void loop() {
  /*  I know I have to somehow read the sensor data and convert that to an int, store the int and then
      Move/sweep the servo arm based on the value of int.
  */


  if (vcnl.readAmbient() < 100);
  TinyServo.write(90);
  digitalWrite(ledPin, HIGH);

  {
    TinyServo.write(70);
    digitalWrite(ledPin, LOW);//
  }


  Serial.print("Ambient: "); Serial.println(vcnl.readAmbient());
  Serial.print("Proximity: "); Serial.println(vcnl.readProximity());
  delay(200);
}