display custom fields depending on variant

-- url of the page with the problem -- : boutique.blaque.nl
-- HikaShop version -- : 2.3.2
-- Joomla version -- : 3.3.3
-- PHP version -- : 5.3.28

is there a way to display 2 custom fields depending on the input of a variant

you can either buy or hire a product
choosing to hire requires input start and end date
but it would be easier for the customer if you don't see those field when you want to buy the item

please explain to me what code i have to put in what file, i'm not a experienced programmer yet

Hello,
Note that you can also restrict the display of your custom field regarding the category of your product, you'll just have to :
- Add the product where you want your custom field to display to a category
- Add that category through the "Categories" tab of your custom field configuration page.

thnx, but that would mean that we have to make an extra categorie for each categorie in which we duplicate an item
isn't that more complex filling the shop, than doing the trick by programming

but can i give the item a specific price for hiring this way?
now i can do it by the variant