After getting an info from sPlOrYgOn seems You might be right, guys. Bot decides sometimes only to make a reply (it's randomise), but in that moment - if there is no key in [replies] they could make a reply - they will not reply , too. In other words existing code for it is screwed up since begining. Other thing is this - easy fix to take out this randomise would affect Your bot will write a reply for You during 1ms after Your sending chat. It's unrealistic, too. But sPlOrYgOn is thinking about something for it, so let him work for now.