variable in the CreateAnswer() function.
"<Free value=\"" + x2str(it->tariffConf.free) + "\"/>" +
"<TraffType value=\"" + TARIFF::TraffTypeToString(it->tariffConf.traffType) + "\"/>" +
"<Period value=\"" + TARIFF::PeriodToString(it->tariffConf.period) + "\"/>" +
"<Free value=\"" + x2str(it->tariffConf.free) + "\"/>" +
"<TraffType value=\"" + TARIFF::TraffTypeToString(it->tariffConf.traffType) + "\"/>" +
"<Period value=\"" + TARIFF::PeriodToString(it->tariffConf.period) + "\"/>" +
+ "<ChangePolicy value=\"" + TARIFF::ChangePolicyToString(it->tariffConf.changePolicy) + "\"/>" +