'Heltec' was not declared in this scope

I downloaded the Heltec dev environment from here:
https://resource.heltec.cn/download/tools/WiFi_Kit_series.zip

I placed the extracted results in this path:
C:\Users\Bill\Documents\Arduino\Hardware\WiFi_Kit_series

I have Arduino IDE 2.0.2
I have selected the WiFi LoRa 32(v3) and created the simple sketch below from the heltec site.

I get a ‘Heltec’ was not declared in this scope error.

#include <heltec.h>

// the setup routine runs once when starts up

void setup(){

// Initialize the Heltec ESP32 object

Heltec.begin(true /DisplayEnable Enable/, true /LoRa Disable/, true /Serial Enable/, true /PABOOST Enable/, 470E6 /**/);

}

// the loop routine runs over and over again forever

void loop() {

}

You can modify it directly on the routine.