automatically calculate PR00

Hi experts,

Request: How to make PR00 automatically calculate based on EK02, KF00 & profit 10%?

PR00 = (EK02 + KF00) X (1 + 10%)

In pricing procedure, all the condition type works fine except PR00. It's said condition record missing.

Example:

EK02 $60

KF00 $10

Z001 (10%) $7 = (60+70) X 10%

(red light) PR00 none

ps. Supposing PR00 should read $77 = (60707).