[SR-Users] Parsing json file on kamailio.cfg file

Hi, I am trying to monitor *uac *channels status periodically in kamailio config file. I call uac.reg_dump rpc command and result will be inside in $var(uac_channel) variable jsonrpc_exec('{"jsonrpc": "2.0", "method": "uac.reg_dump"}'); $var(uac_channel) = $jsonrpl(body); it returns me json formatted result like below, it has a several channels info and their status *flags* {"jsonrpc":"2.0", "result":[ {"l_uuid":"YY","l_username":"YY","l_domain":"YY","r_username":"YY","., " *flags*":16 }, {"l_uuid":"XX","l_username":"XX","l_domain":"XX","r_username":"XX",,... " *flags*":1 }}]} I could not parse this result on kamailio.cfg file ! I want to learn channel that has a 16 value in flag attribute for example !! Would you help me to figure out how I am gonna parse this json file please ?