producting order settlement and batch

Dear all consultants!

I have an issue. I want to manage value by batch. i use the follow way:

- use batch and valuation type. when good receipt from production order, i identify an certain batch and an valuation type.

- then, about variance, i do execute production order normally . when i see result, amount of variance of production order is be settled to Material (not by batch and valuation type). I run MB52/MB5C to check stock and value of stock, but value is not be changed after executing settlement production order.

The thing i care that how to post variance of production order to correspondent batch/valuation type.

any idea will be appreciated.

Thanks in advanced.