Paypal Currency changes

[Sophia(sofi)]

I have a indian website in which I have five currencies in options in the Frontoffice they are USD, GBP, AUD, SGD, INR. So after my paypal integration i have noticed this. 

 

When I make a purchase in the paypal supported currencies for example I purchase an item in  90AUD through out my process it shows 90AUD. But when I click on paypal it converts it to dollars (chuck out the exchange rate for time being ) i.e.,  90 USD. 

 

But I want the payment to show 90AUD even when I reach the paypal payment page. And ofcourse the payment also should be done in that particualr currency that I see on my product page. 

 

I checked with the paypal integration team, they say that's by default in the prestashop that any supported currencies, yet when you reach payment option all the currencies would be converted to USD. How far is this true and any idea how to solve this issue.

 

I basically need

50AUD    as    50AUD  

50GBP    as    50GBP

50SGD    as    50SGD

 

not as 50 USD ofcourse. 

Edited July 9, 2015 by Sophia(sofi) (see edit history)