Different currencies for each sales-orders

Different currencies for each sales-orders

Our company sells its products in more countries, with different currencies. I read in the documentation, it should be possible, but the API ignores my settings. I tried with the following properties in the json.

"currency_id": "1903827000000362003",
"currency_code": "PHP",
"currency_symbol": "Php",

What should i change to set different currencies for each entries?