Active noise control using a LMS filter

I've been trying to build a simulation of an active noise control system but I'm not having any success. Eventually, I stumbled upon an example and been working with it but again no success. This is the matlab simulink file https://drive.google.com/file/d/1FotVBinuKI74NSQo1smxdfcGky7D6igF/view?usp=sharing