typedef struct xml_struct
{
    char        tag[32];
    short       elem_type;
    short       data_type;
    char*       data;
    xml_struct  *subelement;
    int         (*ptrfun)(xml_struct *xml_ptr, boost::property_tree::ptree  *pt, char *tmppath);
}xml_struct;

    xml_struct TempData[] =
    {
        {"curr_temp",   DATA,  FLT,    (char*)&ptrPorts->currtemp,  NULL, BuildCurTemp},
        {"real_temp",   DATA,  FLT,    (char*)&RealTemp,            NULL, NULL},
        {"",            NIL ,  NIL,    NULL,           NULL, NULL}
    };