InitializeRecord for apply payments to vendor bill and multicurrency

Hi all.

We are using OneWorld version for Netsuite and we have vendors with multi currencies. We are trying to get the InitializeRecord for apply payments for one of these multicurrency vendors. But when I do the request I only know how do the default request. This is the code:

$initializeObject                                        = new InitializeRecord();
$initializeObject->type                              = "vendorPayment";
$initializeObject->reference                      = new InitializeRef();
$initializeObject->reference->type            = "vendorBill";
$initializeObject->reference->internalId    = $id;
$request                                                    = new InitializeRequest();
$request->initializeRecord                        = $initializeObject;
$initializeResponse                                   = $service->initialize($request);
$vendorPayment                                       = $initializeResponse->readResponse->record;

In the response object, I'm getting and empty applyList because the default currency that the form is getting is the local currency and this vendor hasn't any vendorBill in this currency. But this vendor has 2 VendorBill pending to be paid in foreing currency and I don't know how I can set the currency for the InitializeRecord.