Accounting entries issue

Hi All,

I had struck with an issue related to pricing, There are two condition types which will derive basic price and discount out and the net amount to be accounted for entries, how do i do this. Pls help me in this regards. Below is the illustration for more clarity

Condition type ZSCP(Base price) 2000

ZDIS(discount) -10% 20

Net value 1980 (this amount to be accounted which is a calculated figure how do i do this )

Pls help me

Regards

Jack