Yes, it takes it from the asset list. There are two hurdles against miscalculation: the final trade result is returned from the API, and the current balance/equity is also returned from the API. Only when both are also missing, the wrong rollover can affect the balance or equity.
All right, that is clever! So I won't worry about not getting the rollover, that also happens in dukascopy api, it does not have a function that returns the rollover/swap/interest of a position. The closest is https://www.dukascopy.com/client/javadoc/com/dukascopy/api/IOrder.html#getCommission%28%29
but I think it refers to the commision that dukascopy charges as an ECN, I have asked them and I am waiting for their response...
Thanks jcl for your answer!
