diff --git a/src/main/java/com/loafle/overflow/crawler/wmi/WMICrawlerWindows.java b/src/main/java/com/loafle/overflow/crawler/wmi/WMICrawlerWindows.java
index 379aa3c..28f09fc 100644
--- a/src/main/java/com/loafle/overflow/crawler/wmi/WMICrawlerWindows.java
+++ b/src/main/java/com/loafle/overflow/crawler/wmi/WMICrawlerWindows.java
@@ -37,7 +37,7 @@ public class WMICrawlerWindows extends WMICrawlerOS {
 
             cItem = config.getItems().get(cIndexI);
 
-            query = (String)cItem.getQueryInfo().get("query");
+            query = cItem.getQueryInfo().getQuery();
 
             wmiconnect = connectServer(config);
 
@@ -111,40 +111,40 @@ public class WMICrawlerWindows extends WMICrawlerOS {
 
         return ofResultSet;
     }
-
-    protected void getMultiValue(EnumVariant enumVariant, Query cQuery, Item cItem, int idxMetric, Map<String, String> resultMap) {
-
-        Variant vItem = null;
-        Dispatch item = null;
-
-
-        int keyIdx = 0;
-        while (enumVariant.hasMoreElements()) {
-
-            vItem = enumVariant.nextElement();
-            item = vItem.toDispatch();
-
-
-            String name = null;
-            String value = null;
-            Variant vValue = null;
-
-            for(int indexI = 0 ; indexI < cQuery.getKeys().size(); ++indexI) {
-                name = cQuery.getKeys().get(indexI);
-                vValue = Dispatch.call(item, name);
-                value = vValue.toString();
-                String keyStr = convertArrayKey(cItem.getMetrics().get(indexI),keyIdx );
-                resultMap.put(keyStr, value);
-                vValue.safeRelease();
-            }
-
-            vItem.safeRelease();
-            item.safeRelease();
-            ++idxMetric;
-            ++keyIdx;
-        }
-
-    }
+//
+//    protected void getMultiValue(EnumVariant enumVariant, Query cQuery, Item cItem, int idxMetric, Map<String, String> resultMap) {
+//
+//        Variant vItem = null;
+//        Dispatch item = null;
+//
+//
+//        int keyIdx = 0;
+//        while (enumVariant.hasMoreElements()) {
+//
+//            vItem = enumVariant.nextElement();
+//            item = vItem.toDispatch();
+//
+//
+//            String name = null;
+//            String value = null;
+//            Variant vValue = null;
+//
+//            for(int indexI = 0 ; indexI < cQuery.getKeys().size(); ++indexI) {
+//                name = cQuery.getKeys().get(indexI);
+//                vValue = Dispatch.call(item, name);
+//                value = vValue.toString();
+//                String keyStr = convertArrayKey(cItem.getMetrics().get(indexI),keyIdx );
+//                resultMap.put(keyStr, value);
+//                vValue.safeRelease();
+//            }
+//
+//            vItem.safeRelease();
+//            item.safeRelease();
+//            ++idxMetric;
+//            ++keyIdx;
+//        }
+//
+//    }
 
     protected String convertArrayKey(String key, int index) {
         int idx = key.indexOf("[");
@@ -168,33 +168,33 @@ public class WMICrawlerWindows extends WMICrawlerOS {
         return ret;
     }
 
-    protected void getSingleValue(EnumVariant enumVariant, Query cQuery, Item cItem, int idxMetric, Map<String, String> resultMap) {
-
-        Variant vItem = null;
-        Dispatch item = null;
-
-        while (enumVariant.hasMoreElements()) {
-
-            vItem = enumVariant.nextElement();
-            item = vItem.toDispatch();
-
-            String name = null;
-            String value = null;
-            Variant vValue = null;
-
-            for(int indexI = 0 ; indexI < cQuery.getKeys().size(); ++indexI) {
-                name = cQuery.getKeys().get(indexI);
-                vValue = Dispatch.call(item, name);
-                value = vValue.toString();
-                resultMap.put(cItem.getMetrics().get(idxMetric++), value);
-                vValue.safeRelease();
-            }
-
-            vItem.safeRelease();
-            item.safeRelease();
-        }
-
-    }
+//    protected void getSingleValue(EnumVariant enumVariant, Query cQuery, Item cItem, int idxMetric, Map<String, String> resultMap) {
+//
+//        Variant vItem = null;
+//        Dispatch item = null;
+//
+//        while (enumVariant.hasMoreElements()) {
+//
+//            vItem = enumVariant.nextElement();
+//            item = vItem.toDispatch();
+//
+//            String name = null;
+//            String value = null;
+//            Variant vValue = null;
+//
+//            for(int indexI = 0 ; indexI < cQuery.getKeys().size(); ++indexI) {
+//                name = cQuery.getKeys().get(indexI);
+//                vValue = Dispatch.call(item, name);
+//                value = vValue.toString();
+//                resultMap.put(cItem.getMetrics().get(idxMetric++), value);
+//                vValue.safeRelease();
+//            }
+//
+//            vItem.safeRelease();
+//            item.safeRelease();
+//        }
+//
+//    }
 
     protected List<String> getColumns(Dispatch item) {
 
diff --git a/src/test/resources/config/example.json b/src/test/resources/config/example.json
index 20ba905..74ff15b 100644
--- a/src/test/resources/config/example.json
+++ b/src/test/resources/config/example.json
@@ -20,36 +20,43 @@
   },
   "items" : [
     {
-      "metrics": [
-        "cpu[$0].usage.system",
-        "cpu[$0].usage.idle",
-        "cpu[$0].usage.user"
+      "keys" : [
+        {"metric" : "cpu[$0].usage.system", "key":"PercentProcessorTime"},
+        {"metric" : "cpu[$0].usage.idle", "key":"PercentIdleTime"},
+        {"metric" : "cpu[$0].usage.user", "key":"PercentUserTime"}
       ],
-      "queryInfo": {
-        "query":"select PercentProcessorTime, PercentIdleTime, PercentUserTime,Name from Win32_PerfFormattedData_PerfOS_Processor",
+      "queryInfo" : {
+        "query": "select PercentProcessorTime, PercentIdleTime, PercentUserTime,Name from Win32_PerfFormattedData_PerfOS_Processor",
+        "extend" : {
+          "nameSpace":"root/cimv2",
+          "wmicPath": ""
+        }
+      },
+      "mappingInfo" : {
         "parseDirection" : "col",
-        "arrayColumns":["Name"]
-      },
-      "keys":["PercentProcessorTime","PercentIdleTime", "PercentUserTime"]
+        "arrayColumns" : [ "Name"]
+      }
     }
-  ,{
-      "metrics": [
-        "cpu.usage.system",
-        "cpu.usage.idle",
-        "cpu.usage.user"
+    ,
+    {
+      "keys" : [
+        {"metric" : "cpu.usage.system", "key":"PercentProcessorTime"},
+        {"metric" : "cpu.usage.idle", "key":"PercentIdleTime"},
+        {"metric" : "cpu.usage.user", "key":"PercentUserTime"}
       ],
-
-      "queryInfo": {
-        "query":"select PercentProcessorTime, PercentIdleTime, PercentUserTime,Name from Win32_PerfFormattedData_PerfOS_Processor where Name='_Total'",
-        "parseDirection" : "col"
-
+      "queryInfo" : {
+        "query": "select PercentProcessorTime, PercentIdleTime, PercentUserTime,Name from Win32_PerfFormattedData_PerfOS_Processor where Name='_Total'",
+        "extend" : {
+          "nameSpace":"root/cimv2",
+          "wmicPath": ""
+        }
       },
-      "keys":["PercentProcessorTime","PercentIdleTime", "PercentUserTime"]
-
-
+      "mappingInfo" : {
+        "parseDirection" : "col",
+        "arrayColumns" : [ "Name"]
+      }
     }
 
-
   ]
 
 }
\ No newline at end of file