Pay tithing in a different currency

Im from Argentina and I'm paid in US dollars to a US Savings Account I have. I want to pay my tithing in dollars from the donations page adding my bank account, how can I switch the currency?

*Argentina is a complicated country and there's many types of dollar exchanges. I NEED to pay it in dollars directly from my account

You can find out if it is possible to make donations in another currency by sending an email to onlinedonationsupport@ChurchofJesusChrist.org and explain what you are trying to do and why. Nobody here can say whether this will be permitted. But it is worth a try.