Multiple DNS suffix

Hello.
Can you tell me please, how to assign multiple DNS suffixes with Mikrotik DHCP?
Here it is under “domain” section:
domain.PNG
I need behaviour like this:
dns.png
I’ve tried:

domain1.local domain2.local
domain1.local, domain2.local
domain1.local; domain2.local

Not working for me.
Thanks.

I think you’re looking for DCHP Option 119 (domain search).