diff --git a/src/main/base/org/bdware/sc/event/REvent.java b/src/main/base/org/bdware/sc/event/REvent.java
index dfcbaef..7a1b732 100644
--- a/src/main/base/org/bdware/sc/event/REvent.java
+++ b/src/main/base/org/bdware/sc/event/REvent.java
@@ -17,6 +17,7 @@ public class REvent extends SM2Verifiable implements Serializable {
     private String sender;
     private REventSemantics semantics = REventSemantics.AT_LEAST_ONCE;
     private boolean forward = true;
+    private String center;
 
     public REvent(String topic, REventType type, String content, String requestID) {
         this.topic = topic;
@@ -37,13 +38,6 @@ public class REvent extends SM2Verifiable implements Serializable {
         return content;
     }
 
-    public boolean isForward() {
-        return forward;
-    }
-
-    public void setForward(boolean forward) {
-        this.forward = forward;
-    }
 
     public String getHash() {
         return hash;
@@ -73,6 +67,22 @@ public class REvent extends SM2Verifiable implements Serializable {
         this.semantics = semantics;
     }
 
+    public boolean isForward() {
+        return forward;
+    }
+
+    public void setForward(boolean forward) {
+        this.forward = forward;
+    }
+
+    public String getCenter() {
+        return center;
+    }
+
+    public void setCenter(String center) {
+        this.center = center;
+    }
+
     public void doSignature(String pubKey, String privKey) {
         this.setPublicKey(pubKey);
         this.doSignature(privKey);