macOS: tmutil set quota

Hey, I had today a very difficult task (ironic): to modify quota on a destination time machine. So, as usual, without too much blabbing, below is an example of how I have modified quota for TM destination.

fmbp16:~ zub$ tmutil destinationinfo
====================================================
Name          : mbp16TM
Kind          : Network
URL           : smb://zub@MINIVM._smb._tcp.local./mbp16TM
ID            : 1
> ==================================================
Name          : TM
Kind          : Network
URL           : smb://zub@myarm._smb._tcp.local./TM
ID            : 2
Quota         : 2,5 TB
fmbp16:~ zub$ tmutil setquota 2 3000
tmutil: setquota requires root privileges.
fmbp16:~ zub$ sudo tmutil setquota 2 3000
Password:
fmbp16:~ zub$ tmutil destinationinfo
====================================================
Name          : mbp16TM
Kind          : Network
URL           : smb://zub@MINIVM._smb._tcp.local./mbp16TM
ID            : 1
> ==================================================
Name          : TM
Kind          : Network
URL           : smb://zub@myarm._smb._tcp.local./TM
ID            : 2
Quota         : 3 TB
fmbp16:~ zub$