How add 2 strings in username?

Hi,
I set auto generated username for ovpn, this works fine:

/interface ovpn-client add name=mngt user=[/interface get 0 mac-address]

Now I need add string in username, like this user=North-[/interface get 0 mac-address]
But don’t find the solution for insert 2 strings in username.
This command works fine:

:put {[/system identity get name];[/interface get 0 mac-address]}
North;64:D1:54:5A:C1:4A

But not work in ovpn have syntax error:

/interface ovpn-client add name=mngt user={[/system identity get name];[/interface get 0 mac-address]}   
syntax error on "{"

How to add this in username?
Any tips?

Use this syntax:
/interface ovpn-client add name-mngt user=([/system identity get name].[/interface get 0 mac-address])

Thanks strods for this great solution :slight_smile:
Best Regards