Display of several currencies in Virtue mart 2.0.14

[megain]

Hi, everybody!
I from Ukraine and at me arose a problem.
Costs joomla 1.5 with Virtue mart 2.0.14, the problem in the following, costs the main currency of UAH as 2 currencies of euro and $ are simply added. When I add the price of goods in uah, the price is displayed normally but when I put for example the price in $ that it displayed all the same as uah. I will be glad to the answer.
To P.S Forgive for my English. I from Ukraine.