23A Foreign currency VAT split payment feature not working

1. As per documentation of the 23A release - https://www.oracle.com/webfolder/technetwork/tutorials/tutorial/cloud/r13/wn/fin/releases/23A/23A-financials-wn.htm#F26424,

it says ' Split payments against foreign currency invoices with a VAT tax line into two payments, one for the line amount in the foreign currency and one for the VAT amount in the ledger currency'.

-----Does this mean we need to split the installments of an invoice into NET amount ( in Foreign currency ) , and VAT amount in ledger currency (PLN)? How is this possible? Since we can only have one currency ( Foreign currency ) at instalment level.