diff --git a/src/main/java/org/bdware/server/action/CMActions.java b/src/main/java/org/bdware/server/action/CMActions.java
index bca6703..6fd3620 100644
--- a/src/main/java/org/bdware/server/action/CMActions.java
+++ b/src/main/java/org/bdware/server/action/CMActions.java
@@ -164,7 +164,7 @@ public class CMActions implements OnHashCallback {
                 return;
             }
             cReq.setAction(jo.get("action").getAsString());
-            cReq.setArg(jo.get("arg").getAsString());
+            cReq.setArg(jo.get("arg"));
             if (cReq.withEvaluatesAnalysis) {
                 cReq.setValue(jo.get("hasValue").getAsLong());
             }
@@ -1391,6 +1391,59 @@ public class CMActions implements OnHashCallback {
         }
     }
 
+    @Action(userPermission = 1L << 26, async = true, httpAccess = false)
+    public void killAllContract(JsonObject args, ResultCallback resultCallback) {
+        if (args.has("verifiedPubKey")) {
+            if (ContractManager.checkNodeManager(args.get(("verifiedPubKey")).getAsString())) {
+                StringBuilder sb = new StringBuilder();
+                sb.append("Kill:");
+                try {
+                    // TODO too many opend files
+                    ProcessBuilder builder = new ProcessBuilder("ps", "-ef");
+                    Process process = builder.start();
+                    Scanner sc = new Scanner(process.getInputStream());
+                    while (sc.hasNextLine()) {
+                        String line = sc.nextLine();
+                        if (line.contains("java")
+                                && (line.contains("ContractProcess") || line.contains("yjs.jar"))) {
+                            LOGGER.debug(line);
+                            {
+                                Scanner sc2 =
+                                        new Scanner(new ByteArrayInputStream(line.getBytes()));
+                                String pid = null;
+
+                                if (sc2.hasNext()) {
+                                    sc2.next();
+                                    if (sc2.hasNextInt()) pid = sc2.nextInt() + "";
+                                }
+                                sc2.close();
+
+                                if (pid != null) {
+                                    ProcessBuilder subProcess =
+                                            new ProcessBuilder("kill", "-9", pid);
+                                    sb.append(pid);
+                                    sb.append(",");
+                                    subProcess.start();
+                                }
+                            }
+                        }
+                    }
+                    sc.close();
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+                ExecutionManager.instance.updateLocalContractToNodeCenter();
+                ReplyUtil.simpleReply(resultCallback, "onKillAllContract", sb.toString());
+                manager.stopAllContracts();
+            } else {
+                manager.stopAllContractsWithOwner(args.get(("verifiedPubKey")).getAsString());
+                ReplyUtil.simpleReply(resultCallback, "onKillAllContract", "Success");
+            }
+        } else {
+            ReplyUtil.simpleReply(resultCallback, "onKillAllContract", "Failed: Illegal user");
+        }
+    }
+
     //    @Action(userPermission = 1L << 26, async = true)
     //    public void queryContractInstanceInfoByDOI(JsonObject args, ResultCallback resultCallback)
     // {
@@ -1482,59 +1535,6 @@ public class CMActions implements OnHashCallback {
      * resultCallback.onResult(gson.toJson(r)); }
      */
 
-    @Action(userPermission = 1L << 26, async = true, httpAccess = false)
-    public void killAllContract(JsonObject args, ResultCallback resultCallback) {
-        if (args.has("verifiedPubKey")) {
-            if (ContractManager.checkNodeManager(args.get(("verifiedPubKey")).getAsString())) {
-                StringBuilder sb = new StringBuilder();
-                sb.append("Kill:");
-                try {
-                    // TODO too many opend files
-                    ProcessBuilder builder = new ProcessBuilder("ps", "-ef");
-                    Process process = builder.start();
-                    Scanner sc = new Scanner(process.getInputStream());
-                    while (sc.hasNextLine()) {
-                        String line = sc.nextLine();
-                        if (line.contains("java")
-                                && (line.contains("ContractProcess") || line.contains("yjs.jar"))) {
-                            LOGGER.debug(line);
-                            {
-                                Scanner sc2 =
-                                        new Scanner(new ByteArrayInputStream(line.getBytes()));
-                                String pid = null;
-
-                                if (sc2.hasNext()) {
-                                    sc2.next();
-                                    if (sc2.hasNextInt()) pid = sc2.nextInt() + "";
-                                }
-                                sc2.close();
-
-                                if (pid != null) {
-                                    ProcessBuilder subProcess =
-                                            new ProcessBuilder("kill", "-9", pid);
-                                    sb.append(pid);
-                                    sb.append(",");
-                                    subProcess.start();
-                                }
-                            }
-                        }
-                    }
-                    sc.close();
-                } catch (Exception e) {
-                    e.printStackTrace();
-                }
-                ExecutionManager.instance.updateLocalContractToNodeCenter();
-                ReplyUtil.simpleReply(resultCallback, "onKillAllContract", sb.toString());
-                manager.stopAllContracts();
-            } else {
-                manager.stopAllContractsWithOwner(args.get(("verifiedPubKey")).getAsString());
-                ReplyUtil.simpleReply(resultCallback, "onKillAllContract", "Success");
-            }
-        } else {
-            ReplyUtil.simpleReply(resultCallback, "onKillAllContract", "Failed: Illegal user");
-        }
-    }
-
     @Action(userPermission = 1L << 26, async = true, httpAccess = false)
     public void setPermission(JsonObject json, ResultCallback resultCallback) {
         String closePermission = json.get("closePer").getAsString();
diff --git a/src/main/java/org/bdware/server/ws/ContractManagerFrameHandler.java b/src/main/java/org/bdware/server/ws/ContractManagerFrameHandler.java
index 5238cda..cd0d698 100644
--- a/src/main/java/org/bdware/server/ws/ContractManagerFrameHandler.java
+++ b/src/main/java/org/bdware/server/ws/ContractManagerFrameHandler.java
@@ -1,7 +1,6 @@
 package org.bdware.server.ws;
 
 import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
@@ -138,7 +137,7 @@ public class ContractManagerFrameHandler extends SimpleChannelInboundHandler<Web
             // logger.debug("[WebSocket receive] " + request);
             JsonObject map;
             try {
-                map = JsonParser.parseString(request).getAsJsonObject();
+                map = JsonUtil.parseStringAsJsonObject(request);
             } catch (Exception e) {
                 Response response = new Response();
                 response.action = "onException";
@@ -165,7 +164,7 @@ public class ContractManagerFrameHandler extends SimpleChannelInboundHandler<Web
                         dataCache.append(map.get("data").getAsString());
                         String dataStr = dataCache.toString();
                         LOGGER.debug("[WebSocketFrame] DataString:" + dataStr);
-                        map = JsonParser.parseString(dataStr).getAsJsonObject();
+                        map = JsonUtil.parseStringAsJsonObject(dataStr);
                         dataCache = new StringBuilder();
                     }
                 }