Topup: ANZ bank (NZD) to Revolut

Hi there, how to topup revolut “New Zealand account”?

Yes, there is IBAN code and other information, but my bank ask me witch currency I want to send - GBP or EUR? I think I you should send NZ dollars, but this is not an options. If I choose GBP, they need “sort code”, which I can’t find anywhere. So should I send EUR? I has no sence to me.

Is there any topic (step by step), how to topup in NZD or other “not main” currencies?

Thanks a lot,