1 + 1 discount

Hello again.

I am trying to display 1 + 1 product means when someone would like to order one he will get two, when someone would like to order three he will get four and so on.

What is the best way to do that via Hikashop?

Usually users would set several prices with a min quantity for each price, like that for example:

price min qty
10€ 1
5€ 3 (2 paid => 1 free)

Thats what i wanted, but it count the price from the 2 minimum insted of going back to 1

Example now:

price qty
165$ 1
200$ 2
300$ 3 ( 2 + 1 from 2)
400$ 4
...


Example needed:
price qty
165$ 1
200$ 2
365$ 3 (2 + 1)
400$ 4
...

thanks.

EDIT: never mind, thats ok