I need to have the following setup on my shop.
I am selling a product A.
Product A is made in 3 standard sizes (a, b and c) but it also can be made in custom size (x)
I need to setup the attributes to work like:
1. customer can select from attributes (a, b, c and x) from a dropdown list (I have this already!)
2. if a customer selects "x" from the dropdown
3. another 3 text attributes appear where customer can enter his own dimensions for the product and these go into the order and invoice
How do I get this?