Write a setpoint From Blynk to arduino to control Relay

Hi everyone,
hope all are good. i have a question i want to create a setpoint on blynk which is use to control the relay in arduino. when temperature rise the relay in on otherwise relay off.

Hey there,
You can use if statement to create a condition.

@John93 dear how to send value (setpoint) from blynk into arduino

You can find more details here