Custom fields problem

Dears,

I have installed the free version of Hika Shop and when creating custom fileds I can see only the Table Address. I can't select other tables (es.products)as I could in the backend demo version.

I have read the following, but this option is not available in my Configuration - "Display custom item fields" :

Custom item fields don't appear on the front end.
When you create a custom field, don't forget to enable the "Front-end" option.
Be careful, when you create the custom field, be sure that you set the good table , which is the "item" table, not the "product" table.
For products listings, enable the default option in System->configuration->display, enable "Display custom item fields" in the Default parameters for products.
For products listings, enable the same option, in Display->content menus/modules.


Is this option and other tables than address available only for the commercial version?