Condition for free goods - foreign trade

Hi experts,

I met a problem.

When i did my declaration in VE01 with free goods i don't get any price for my condition GRWR. (Because it's free).

Generally, free items are with paying items which are real value. So for this kind of items(TANN) we want to get 100% of the values item.

How did that ? I need to create an other condition in my princing procedure ?

thanks,

Umti.