Hello, the first with square brackets is obsolete, doesn't work anymore since 3.0 (wiki has to be updated). The second should work, do you get syntax error? Cheers, Daniel On 13/02/14 15:14, Jijo wrote: Hi I tried the binary operation using $var as per the documentation and its seems not working. Can somebody help me to understand it. http://kamailio.org/dokuwiki/doku.php/pseudovariables:3.1.x $var(a) = 3 + (7&(~2)); if( [ $var(a) & 4 ] ) { xlog("var a has third bit set\n"); } The format with square bracket in the conditional statement is showing parse error when i load the cfg. So it tried like below and that too not working $var(a) = 8; if( $var(a) & 4 ) { xlog("var a has third bit set\n"); } Please let me know if something missing here.? Thanks Jijo _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing listsr-users@lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users