BotPages/Demo/Properties/launchSettings.json

{
  "profiles": {
    "Demo": {
      "commandName": "Project",
      "environmentVariables": {
        "TELEGRAM_TOKEN": "7992309062:AAHkb4wnFi8w7H4V0zvUW_LJg55jtzuhahU"
      }
    }
  }
}