:local interfaces [/interface find];
:local interfaceName "LoopBr"  ;
:local routerIP [ip address get [find interface=$interfaceName] address];
:put ("Router IP: " . $routerIP);

:local tx;
:local rx;
#:put $interfaces;
:foreach interface in=$interfaces do={
    :local intName [/interface get $interface name];
    #:put ("Debug: " . $intName);
    :put ("Interface: " . $intName);

    :local softTx ([/interface get [find name=$intName] tx-byte]);
    :local softRx ([/interface get [find name=$intName] rx-byte]);

    #:set tx ($tx + $softTx);
    #:set rx ($rx + $softRx);

    :local data ("routerIP=" . $routerIP . "&intName=" . $intName . "&tx=" . $softTx . "&rx=" . $softRx);

    :local response [/tool fetch url="http://172.16.20.41/receiver_data.php" http-method=post http-data=$data as-value];
    :put ("sending data from interface: " . $intName);
    :put ($response->"data");
    :delay 1000ms;
    #:put $tx;
    #:put $rx;
};