Value Button on start

Goodmorning everyone
I have created an application with blynk that I use to activate the boiler at home. I have only one small problem, the button on the app is configured in such a way that it immediately sends a 1 on power up.
how can I set it up so that when it is switched on, it does not send anything or send 0?

use esp8266

I suspect it is not the app that is sending it, but rather the ESP itself. I also suspect it has to due with the pin you are using on the ESP. IF you could share your wiring set-up, a copy of your code (properly formatted that is), and perhaps some more details on the hardware we may be able to provide better help. Otherwise we will just be making assumptions and guesses.