Currencies - rate

Hello,



In currencies > Rate field I am able to set exchange rate of 1eur = 0.289Lt



Is it posible to set more then 3 decimals? For example 0.28922?







Just checked demo and max allowed in latest cart are 5 decimals, how can I do this with earlier cart?

http://demo.cs-cart.com/professional/admin.php?dispatch=currencies.manage



Euro Rate is 1.28000



2.1.4 allows set only 1.280