consignment info record

Hi Experts,

I have created purchased order (me21n) with item category K and created consignment info record also. There net price is mandatory. I have taken goods receipt and goods issued to cost center by 201K.

when I settle the vendor consignment through MRKO, system is packing the price from info record.

My question is, we have procured the material last month at Rs.10/kg. Today I have consumed 5 Kg material and today"s rate is Rs.12/kg.

I have created the info record @ Rs.10/- and system is settling the same at Rs.10/- only instead of 12/- (market price).

Hope you understand my question and help me by solving the same.

Thanks in advance

Kishore