To receive a number at ESP32 sent by Blynk app

Hello to Everyone!
I want to control temperature of an oven remotely using ESP32 and Blynk app. I will send a number (two or three digit) using my mobile phone. This number have to be received at ESP32 and extracted for use in logic to control temperature. Also, current temperature to be displayed on mobile phone. Please help. I would be very thankful for any support.

Read the documentation for BLYNK_WRITE(vPin)


Thanks a lot for your reply. I will read and report for further support if required.