diff --git a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.cxx b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.cxx
index bcda56fb45a..6f85242dc7d 100644
--- a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.cxx
+++ b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.cxx
@@ -126,7 +126,7 @@ uint32_t& HelloWorld::index()
  * @param _message New value to be copied in member message
  */
 void HelloWorld::message(
-        const std::string& _message)
+        const eprosima::fastcdr::fixed_string<20>& _message)
 {
     m_message = _message;
 }
@@ -136,7 +136,7 @@ void HelloWorld::message(
  * @param _message New value to be moved in member message
  */
 void HelloWorld::message(
-        std::string&& _message)
+        eprosima::fastcdr::fixed_string<20>&& _message)
 {
     m_message = std::move(_message);
 }
@@ -145,7 +145,7 @@ void HelloWorld::message(
  * @brief This function returns a constant reference to member message
  * @return Constant reference to member message
  */
-const std::string& HelloWorld::message() const
+const eprosima::fastcdr::fixed_string<20>& HelloWorld::message() const
 {
     return m_message;
 }
@@ -154,7 +154,7 @@ const std::string& HelloWorld::message() const
  * @brief This function returns a reference to member message
  * @return Reference to member message
  */
-std::string& HelloWorld::message()
+eprosima::fastcdr::fixed_string<20>& HelloWorld::message()
 {
     return m_message;
 }
diff --git a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.h b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.h
index 0c6d098011f..a09bb581bc8 100644
--- a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.h
+++ b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.h
@@ -152,32 +152,31 @@ class HelloWorld
      * @param _message New value to be copied in member message
      */
     eProsima_user_DllExport void message(
-            const std::string& _message);
+            const eprosima::fastcdr::fixed_string<20>& _message);
 
     /*!
      * @brief This function moves the value in member message
      * @param _message New value to be moved in member message
      */
     eProsima_user_DllExport void message(
-            std::string&& _message);
+            eprosima::fastcdr::fixed_string<20>&& _message);
 
     /*!
      * @brief This function returns a constant reference to member message
      * @return Constant reference to member message
      */
-    eProsima_user_DllExport const std::string& message() const;
+    eProsima_user_DllExport const eprosima::fastcdr::fixed_string<20>& message() const;
 
     /*!
      * @brief This function returns a reference to member message
      * @return Reference to member message
      */
-    eProsima_user_DllExport std::string& message();
+    eProsima_user_DllExport eprosima::fastcdr::fixed_string<20>& message();
 
 private:
 
     uint32_t m_index{0};
-    std::string m_message;
-
+    eprosima::fastcdr::fixed_string<20> m_message;
 };
 
 #endif // _FAST_DDS_GENERATED_HELLOWORLD_H_
diff --git a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.idl b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.idl
index 0fd2c355aee..80332bb9ee5 100644
--- a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.idl
+++ b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorld.idl
@@ -1,5 +1,5 @@
 struct HelloWorld
 {
 	unsigned long index;
-	string message;
+	string<20> message;
 };
diff --git a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldCdrAux.hpp b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldCdrAux.hpp
index cf39bf78389..4334027c0af 100644
--- a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldCdrAux.hpp
+++ b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldCdrAux.hpp
@@ -24,7 +24,7 @@
 
 #include "HelloWorld.h"
 
-constexpr uint32_t HelloWorld_max_cdr_typesize {268UL};
+constexpr uint32_t HelloWorld_max_cdr_typesize {33UL};
 constexpr uint32_t HelloWorld_max_key_cdr_typesize {0UL};
 
 
@@ -42,4 +42,4 @@ eProsima_user_DllExport void serialize_key(
 } // namespace fastcdr
 } // namespace eprosima
 
-#endif // _FAST_DDS_GENERATED_HELLOWORLDCDRAUX_HPP_
\ No newline at end of file
+#endif // _FAST_DDS_GENERATED_HELLOWORLDCDRAUX_HPP_
diff --git a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldPubSubTypes.h b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldPubSubTypes.h
index f6c88d5c191..f382d2212e5 100644
--- a/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldPubSubTypes.h
+++ b/examples/cpp/dds/HelloWorldExampleDataSharing/HelloWorldPubSubTypes.h
@@ -91,7 +91,7 @@ class HelloWorldPubSubType : public eprosima::fastdds::dds::TopicDataType
 #ifdef TOPIC_DATA_TYPE_API_HAS_IS_BOUNDED
     eProsima_user_DllExport inline bool is_bounded() const override
     {
-        return false;
+        return true;
     }
 
 #endif  // TOPIC_DATA_TYPE_API_HAS_IS_BOUNDED