Checkout Currency Conversion – Live API

Dear Admin,
We are using default currency as our local currency called “BDT”. We have also setup this currency as the checkout currency.

Then we have added USD currency. In the conversion rate from BDT to USD, we have changed it manually.

Now we want to that when it’s converting from USD to BDT in the checkout page total amount, this conversion should from live rate (Not our manual rate in the conversion rate area).