I have a hook here which works great (it looks for a field with the parameter name zip, and sets a hidden field based on the zip value):
Now I have another hook for a specific form. This time I am trying to access the zipcode field of the address type advanced field.
I find that I cannot access the zipcode value (the variable is empty). The same holds for all the sub fields of any of the advanced field types. I cannot lay a finger on what I am doing wrong. Thanks.