I am using Xen and VirtulaBox but for this question I will go with Virtualbox
I have created a licensed virtual Mikrotik with 2 network cards (bridged)
My wish is to make a Wireless AP; I have added a physical adapter to server, but when I add this card to the mikrotik VM it sees it as an Ethernet device (I understand why)
How can I make this work? I want to be able to make a virtual mikrotik AP wireless

If nothing changed, there is no support for virtual WiFi interfaces.

Probably the easiest way around this would be to run a "real" MikroTik AP in cap mode and then use the CHR as a cap manager.