STO Accounting Entries for sending plant

Dear All,

I am facing little challenge to meet below mentioned requirement.

Requirement:

Plant A sends Material- M-10 to Plant B. Lets assume MAP of M-10 = 100.

Now accounting entries @ Material movement on 641 would be.

Inventory A/C  100 Cr     Plant A

Inventory A/C  100 Dr     Plant B.

Client want that a Price difference must be charged to Receiving Plant B.

At the time of 641, it would be like.

Inventory A/C     100 Cr     Plant A

Price Diff A/C      50 Cr     Plant A

Inventory A/C     150 Dr     Plant B.

Please give your view to map this.

Regards,