diff --git a/Examples/src/main/java/io/github/jwdeveloper/tiktok/CollectorExample.java b/Examples/src/main/java/io/github/jwdeveloper/tiktok/CollectorExample.java
index 1e26212..53a295f 100644
--- a/Examples/src/main/java/io/github/jwdeveloper/tiktok/CollectorExample.java
+++ b/Examples/src/main/java/io/github/jwdeveloper/tiktok/CollectorExample.java
@@ -24,11 +24,9 @@ package io.github.jwdeveloper.tiktok;
 
 
 import io.github.jwdeveloper.tiktok.extension.collector.TikTokLiveCollector;
-import org.bson.Document;
 
 import java.io.IOException;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 public class CollectorExample {
 
@@ -59,10 +57,10 @@ public class CollectorExample {
                     {
                         event.getException().printStackTrace();
                     })
-                    .addListener(collector.newListener(additionalDataFields, o ->
+                    .addListener(collector.newListener(additionalDataFields, document ->
                     {
                         //filtering document data before it is inserted to database
-                        if (o instanceof Document document && document.get("dataType") == "message") {
+                        if (document.get("dataType") == "message") {
                             return false;
                         }
                         return true;
diff --git a/extension-collector/src/main/java/io/github/jwdeveloper/tiktok/extension/collector/api/settings/mongo/MongoDataCollectorSettings.java b/extension-collector/src/main/java/io/github/jwdeveloper/tiktok/extension/collector/api/settings/mongo/MongoDataCollectorSettings.java
index 3d319ab..bca2564 100644
--- a/extension-collector/src/main/java/io/github/jwdeveloper/tiktok/extension/collector/api/settings/mongo/MongoDataCollectorSettings.java
+++ b/extension-collector/src/main/java/io/github/jwdeveloper/tiktok/extension/collector/api/settings/mongo/MongoDataCollectorSettings.java
@@ -29,7 +29,6 @@ import java.util.function.Consumer;
 @Data
 public class MongoDataCollectorSettings {
 
-    @Setter
     private String connectionUrl;
 
     private String databaseName = "tiktok";