Add to cart services

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : 2.3.2
-- Joomla version -- : 3.3.1
-- PHP version -- : x.x.x
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hi.

Im new in HikaShop.
I would like to know if i can sell services.
I would like to have the options for adding to cart
20€ / for 2 months
60€ / for 8 months
90€ / for 12 months

I want customer have only these options on cart.
Thanks in advance

Hello,
1. Sure you can do that, you'll just have to sell virtual goods
2. The solution will just be to use Characteristics to do that
==> You'll just have to create a characteristic via "Hikashop->Products->Characteristics" and use it through the "Characteristics" tab of your product configuration page.

i did that but i dont know hot to change the price
2 months 20
3 months 40
6 months 50

when i select one of them i get the same price