Is there a way to order the fields in the "custom properties" area in the Product edit ( E-commerce/Products/Edit product (green pen) ?

I have 4 fields that I added to COM_SKU, that appear in the "custom properties". This are not fields in the product "Document Type", they were created in the COM_SKU table. I'm checking the code in the file ( D:\Gecko\CreativeArtsGallery\Kentico\CMSModules\Ecommerce\Controls\UI\ProductEdit.ascx ) and debugging this line:

skuCustomForm.FormInformation = FormHelper.GetFormInfo(ECommerceObjectType.SKU + ".UpdateCustom", true);

The skuCustomForm.FormInformation collection contains all the fields, including my 4 custom fields, I was thinking in altering their indexes to apply my needed order, but I think it has to be a better / Cleaned way to do this. Can you help me ? Thanks.