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Hello,Can you kindly confirm where to put the api key. This is how I tried to use it, but the data wasn't sent. To simplify things, I am not reading data from sensors. I just put some static values to see if they go through.Using Arduino Nano and ESP8266-01value_temp = 22; //analogRead(sensor_temp); value_light = 0;//analogRead(sensor_light); value_humid = 30;//analogRead(sensor_humid);Please confirm the lines below. I didn't modify the commented line, but part of my key is in the second line.// GET /update?key=[THINGSPEAK_KEY]&field1=[data 1]&field2=[data 2]...;String GET = "GET /update?key=9W8Z902N4YE";