Hello dear BSTRobin, when i use adafruit_bme680.h library, the BME688 sensor works well without any problem but in this library we can't get to the co2 and evoc values, so when i use this code and another code bsec.h library, the co2 and evoc values are zero from bsec library but iaq and other values from adafruit library works well, How i can reach to co2 and evoc values with adafruit library or it isn't possible, so why the bsec library not working behind adafruit library, can you help me to solve this issue please.thanks alot