What fantastic post Luca. 
I can’t believe this hasn’t been acknowledged previously.
I have just got a SXT and will be giving these a trial run. I may have some questions for you!
Many thanks for this.
PS I use Pushover, so may look at trying that as opposed to Telegram. See http://forum.mikrotik.com/t/pushover-ready-mikrotik-script-to-send-messages/120920/1