[SR-Users] kamailio/script call route(...) in switch(...) expression

Hi, Let route[FOO]{...} returns -1, 0, or 1 value. Next example never print message in case -1: switch (route(FOO)) { case -1: xlog("L_INFO", "FOO = -1\n"); break; case 0: xlog("L_INFO", "FOO = zero\n"); break; case 1: xlog("L_INFO", "FOO = +1\n"); break; } Result from route(FOO) less then to zero converted to 0, so never get label -1, but next example works properly (when use $rc): route(FOO); switch ($rc) { case -1: xlog("L_INFO", "FOO = -1\n"); break; case 0: xlog("L_INFO", "FOO = zero\n"); break; case 1: xlog("L_INFO", "FOO = +1\n"); break; } Is this bug, or regular behavior ? Regards, Seudin