Hello, Lily.
I am not sure what you are asking, Should I copy and paste the complete code Here?
Also, I am relatively new to wix code too, and if you read Eugene’s explaination, it’s really thorough and he made it look so simple. He has even included screenshots to make it really understandable. (Hats off Eugene!)
Try to go through the explaination and you will understand how to implement the code.
Thank You.