You should probably use Python or Node.js as your programming language, or use a different client device such as a NodeMCU or ESP32.
I’m not sure if Python or Node.js work with Blynk 2.0 yet, so my preference would be to use a different hard ware device as your client.
Either way, you need to use virtual pins with Blynk 2.0, and have the appropriate virtual pin handlers in your code. This is how they work in C++…