FAP221B FortiOS 5.4 backward compatibility with 5.2.5 Controller?

Hi guys!

I have a Fortigate 60C which cannot be upgraded to 5.4, however my FortiAP supports FortiOS 5.4.

Do you know if it's possible to manage the FortiAP (v5.4) from my Fortigate (v5.2.5)?

I will not try this until it's confirmed, there is no support for downgrade from 5.4.