[SR-Users] Sanity module documentation error?

The routing script has if(sanity_check("1159", "6")) { xlog("L_INFO","Bad message from $proto:$si:$sp\n$mb\n"); break; } Seems like sanity_check function returns true is sanity check passes, but not failed. Am I right? 0(14085) DEBUG: <core> [receive.c:145]: After parse_msg... 0(14085) DEBUG: <core> [receive.c:186]: preparing to run routing scripts... 0(14085) DEBUG: <core> [parser/parse_to.c:803]: end of header reached, state=10 0(14085) DEBUG: <core> [parser/msg_parser.c:185]: DEBUG: get_hdr_field: <To> [35]; uri=[sip:167147511@204.74.213.5:5090] 0(14085) DEBUG: <core> [parser/msg_parser.c:187]: DEBUG: to body [<sip:167147511@204.74.213.5:5090> ] 0(14085) DEBUG: <core> [parser/msg_parser.c:165]: get_hdr_field: cseq <CSeq>: <73> <REGISTER> 0(14085) DEBUG: <core> [parser/msg_parser.c:199]: DEBUG: get_hdr_body : content_length=0 0(14085) DEBUG: <core> [parser/msg_parser.c:101]: found end of header 0(14085) DEBUG: <core> [parser/parse_to.c:174]: DEBUG: add_param: tag=jzbyj 0(14085) DEBUG: <core> [parser/parse_to.c:803]: end of header reached, state=29 0(14085) DEBUG: sanity [mod_sanity.c:217]: all sanity checks passed 0(14085) INFO: <script>: Bad message from udp:71.59.87.156:5066