How to recieve data from my channel through sim800 and turn ON relay

Pls I need help to read my channel field last value (1 or 0) and in turn switch on a relay connected to my arduino pin using sim800l. I don't know how to go about the code for it. Anyone with a link to an example or a guide pls. My channel field is been updated with a "1" or "0" from my mit app inventor mobile app. In return I want to turn on a relay on/off when this field is updated by using sim800l to be checking the field last value

Answer 1

[David Stacer]

The read data from channel api should help you.

https://www.mathworks.com/help/thingspeak/read-data-from-channel.html