final String criticalBatteryOutput = String.format("{\"id\":\"%s\",\"data\":{\"measured\":[{ \"status\": \"Critical Battery %s in the following sensor %s \", \"battery\": %s}]}}",greenhouse2, sensorData.getValue(),sensorData.getTag(),sensorData.getValue());
final String optimalBatteryOutput = String.format("{\"id\":\"%s\",\"data\":{\"measured\":[{ \"status\": \"Optimal Battery %s in the following sensor %s \", \"battery\": %s}]}}",greenhouse1, sensorData.getValue(),sensorData.getTag(),sensorData.getValue());