dynamic product Dynamic Product Price Calculator file

[stclair]

I have created a 'Price Calculator' file as explained in the documentation for Dynamic Product, but cannot get it to work with my product.

-I have created the .php file, calling it productxxx.php where xxx is the product_id.

-I have placed the .php file in the dynamicproduct/calculator directory (I had to create the calculator directory first)

I have searched the documentation, console and other forums, but cannot resolve this issue.

How do I associate this Price calculator file with the product? Is it in the Price Formula? Where do I reference the $result field?

Any suggestions would be much appreciated.