According to https://www.kamailio.org/wikidocs/cookbooks/devel/core/ (Core Cookbook) type boolean is documented as: * boolean - aliases to 1 (true, on, yes) or 0 (false, off, no) Moreover the if() and while() statement can accept a number as condition. My expectation was that passing non-zero is always converted to true, but this is not correct. Please document how numbers are converted to booleans in case of if() and while() conditions. -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3315 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3315(a)github.com>