How to update OT unit price when using average cost 02.

Hi,

   We use cost as transfer price for ST/OT orders and we use average cost 02 cost method.

   When we enter the ST/OT,  there's no completion and no cost. The OT unit price is zero.

   After we do shipment, we can update the ST cost by modify the P4205 process option to calling R42950. But the price of ST, OT don't be updated by R42950.

   Is there another way to update the OT unit price as cost?

   Thanks.