increment & decrement in routing filters

Hi,
Instead of expected pref=201 it set to 1, looks like + or - just ignored.
Is it a normal behaviour, or I’m doing something wrong?
Tested on 7.16+

https://help.mikrotik.com/docs/spaces/ROS/pages/74678285/Route+Selection+and+Filters* typo (set bgp-local-ref instead of set bgp-local-pref)

Command: set
The command is used to set a new value to writeable properties. Value can be set from other readable properties of matching types. For numeric properties, > it is possible to prefix the value with +/- which will increment or decrement the current property value by a given amount> . For example, "set bgp-local-> ref > > +1> " > will increment > current LOCAL_PREF by one, or extract value from other readable num property, “set distance +ospf-ext-metric”


set bgp-local-pref 200
if (dst == 206.168.193.0/24) {set bgp-local-pref +1; accept}
if (dst !=0.0.0.0/0 && dst-len in 8-24) {accept}



> routing/route/print detail where dst-address =206.168.193.0/24 
Flags: X - disabled, F - filtered, U - unreachable, A - active; 
c - connect, s - static, r - rip, b - bgp, o - ospf, i - isis, d - dhcp, v - vpn, m - modem, a - ldp-address, l - ldp-m
apping, g - slaac, y - bgp-mpls-vpn; 
H - hw-offloaded; + - ecmp, B - blackhole 
 Ab   afi=ip4 contribution=active dst-address=206.168.193.0/24 routing-table=main gateway=100.66.125.17 
       immediate-gw=100.66.125.17%BGP.Ex-KAN distance=20 scope=40 target-scope=10 belongs-to="bgp-IP-100.66.127.254" 
       bgp.peer-cache-id=*2800003 .as-path="400671" .large-communities=400671:1:100 .local-pref=1 .origin=igp 
       debug.fwp-ptr=0x20443240

on 7.15.3 everything works as expected