Hi Skybar, first of all thank you for the answer.
I tried using the set attribute and bind but nothing seems to work.
Now I am a little more confused. Add attribute help me to create the attribute (that is what I need first) but it won’t create it because I don’t know if my “if” statement is right.
Set attribute should go after the add attribute to set it up?
Hous and hours and I can't find the way hahaha