MTL TRANSACTION INTERFACE--TRANSACTION COST with converted UOM

 Hello:

I am using MTL TRANSACTIONS INTERFACE to load opening Balance.

Item Code= XXX

Primary UOM= EACH

1 SET= 5 EACH

In the insert Statment in to interface

Transaction UOM=SET

Transaction Quantity=3

Transaction Cost= 30

Supose that the when see this transaction by primary UOM (EACH) the cost will be

Quantity 15 Each (3 Set * 5 Each)

Cost per each 6   30/5

Total Cost 90       ((30/5)*15)

But when I see transaction Detail:

Quantity 15

Cost per each 30

Tota Cost 450

The interface convert this Quantity to primary UOM (3*5) and multiply this Quantity by Transaction Cost (30)

Supose to convert this Quantity (30/5).

Can any one help me please to fix this issue?

Thanks