SAMBA: neither valid-users nor require-encryption work.

RouterOS Beginner Basics
1

Contrary to https://help.mikrotik.com/docs/display/ROS/SMB I cannot set valid-users or require-encryption parameters in my system. What am I missing?

[admin@Chaps] /ip smb shares> print 
Flags: X - disabled, I - inactive, * - default 

 #    NAME                                                       DIRECTORY                                                       MAX-SESSIONS 
 0 X* Frisbee share                                              disk1                                                                     10 
 1    ;;; Publicznie dostpne
      Commons                                                    disk1/commons                                                             10 
 2    ;;; tylko my dwoje
      Petros i Kasia                                             disk1/petros_i_kasia                                                      10 
 3    ;;; Prywatne Petrosa
      Petros                                                     disk1/petros                                                              10 
 4    ;;; Prywatne Kanako
      Kanako                                                     disk1/kanako                                                              10 

[admin@Chaps] /ip smb shares> set [edit] 
number: 2 
value-name:  
ValueName ::= comment | directory | max-sessions | name
  comment -- Short description of the item

value-name: valid-users 
Script Error: action cancelled

RouterBOARD
Model RBD52G-5HacD2HnD
Revision r3
Serial Number HG609KDMGK7
Firmware Type ipq4000L
Factory Firmware 6.49.11
Current Firmware 6.49.11
Upgrade Firmware 6.49.15

2

For ROS6 you need to use this manual - https://wiki.mikrotik.com/wiki/Manual:IP/SMB