Switch data Send and receive nodmcu esp8266

I fixed your post… you need to properly format any posted code as per the directions…

Probably becasue you are not actually doing anything to send data to any widget on V4… Please read!!

http://help.blynk.cc/getting-started-library-auth-token-code-examples/blynk-basics/what-is-virtual-pins

http://help.blynk.cc/getting-started-library-auth-token-code-examples/blynk-basics/how-to-display-any-sensor-data-in-blynk-app