v6.26 will be released on 6th week of 2015, check the latest

RouterOS General
22

Hello MikroTik suppor team,

multiple-year bug - initialize variable via SMS:

http://forum.mikrotik.com/t/how-initialized-a-variable-by-sms/53857/1
Ticket#2012083066000462
Ticket#2013010766000731