foriegn currency fluctuation

Hi experts

I have made PO for 1kg and price is 1 USD

I have made a PO on 1 march. in USD. tht day 1 USD = 50 INR

I did GR on 1 April . tht day 1 USD = 53 INR

I paid vendor in USD on 15th april tht day 1 USD = 55INR

During GR I want accounting : debit Material : 53 INR

credit GR/IR : 53 INR

During MIRO I want accounting : Debit GR/IR :53 INR

Debit foriegn currency fluctuation : 2 INR

credit vendor : 55 INR

The above accounting is what i want to be in my system but it is not happening.

Can u please tell me how to achieve this type of accounting??? what are the settings for it?