Get router serial number script

RouterOS General
1

/system routerboard get serial-number

Returns nothing when run in terminal. Please help.

2

:put [ /system routerboard get serial-number ]

Prints serial number when run in terminal.

https://wiki.mikrotik.com/wiki/Manual:Scripting#Global_commands

Command: put
Syntax: :put
Description: put supplied argument to console

3

Thank you.