Price difference add up to stock account

hi,

As per my knowledge, we assign one account in the key PRD. so that price difference on material will go to his account. If in the case we don't want to transfer difference amount to another account and if we want to add up the difference amount to stock or material account, what should we do?

eg:   raw material account           1000  

       price difference account         50

       vendor/ gr/ir                        1050

         raw material account        1050

        vendor/ gr/ir                     1050