Well, as I said before, I'm creating new product type, for products, where customer need to upload images with the order. For example, for printing photos, similar to http://demo.aurigma.com/ImageUploade...r/default.aspx. And I need to save the name of uploaded file in the product attribute. So every product with this product type should have this attribute.
The question is how to add this attribute automatically when product for my product type created.