Import child-products with final price instead of sum up to the parent

[Dzifa]

Hallo Virtuemart members,

I have a little problem with my child-products.
I use for child-products the plugin stockable variant.



This is the problem: Wenn I add by a special field a child-products, virtuemart adds this value + the value of the parent. So wenn I fill in 35,50 it becomes 71.





Normally you would think "What is the problem? You have solved it by enter to the parentproduct 0,00001". That is right, but I want that visitors can go to the categorie "Eenlijners". People see there 0,00 euro, that is ugly and misleading.
http://eskokiteworld.net63.net/eenlijners.html

I use Joomla 2.5.7 and Virtuemart 2.0.12
http://eskokiteworld.net63.net/eenlijners/power-sled.html

Thanks for thinking with me. I hope someone knows a solution. 

Greeting,

Rob Koppenaal

Edit: I found this artikel, but i can't find any sense to it. http://network.convergenceservices.in/forum/46-virtue-mart/1238-steps-for-adding-attributes--custom-fields-in-virtue-mart-20--to-products.html