diff --git a/core-writer/include/H5WriteModule.hpp b/core-writer/include/H5WriteModule.hpp
index 07430fa..1cc8fd1 100644
--- a/core-writer/include/H5WriteModule.hpp
+++ b/core-writer/include/H5WriteModule.hpp
@@ -9,7 +9,7 @@
 class H5WriteModule {
     typedef std::unordered_map<std::string, HeaderDataType> header_map;
 
-    RingBuffer& ring_buffer_;
+    RingBuffer<FrameMetadata>& ring_buffer_;
     const header_map& header_values_;
     const H5Format& format_;
     std::atomic_bool is_writing_;
@@ -23,7 +23,7 @@ protected:
 
 public:
     H5WriteModule(
-            RingBuffer& ring_buffer,
+            RingBuffer<FrameMetadata>& ring_buffer,
             const header_map& header_values,
             const H5Format& format);
 
diff --git a/core-writer/include/ZmqRecvModule.hpp b/core-writer/include/ZmqRecvModule.hpp
index 36f1b64..f414926 100644
--- a/core-writer/include/ZmqRecvModule.hpp
+++ b/core-writer/include/ZmqRecvModule.hpp
@@ -9,7 +9,7 @@ class ZmqRecvModule
 {
     typedef std::unordered_map<std::string, HeaderDataType> header_map;
 
-    RingBuffer& ring_buffer_;
+    RingBuffer<FrameMetadata>& ring_buffer_;
     const header_map& header_values_;
     std::atomic_bool is_receiving_;
     std::atomic_bool is_saving_;
@@ -21,7 +21,7 @@ protected:
 
 public:
     ZmqRecvModule(
-            RingBuffer& ring_buffer,
+            RingBuffer<FrameMetadata>& ring_buffer,
             const header_map& header_values);
 
     virtual ~ZmqRecvModule();
diff --git a/core-writer/src/module/H5WriteModule.cpp b/core-writer/src/module/H5WriteModule.cpp
index 5fa6ba2..0ef1c2d 100644
--- a/core-writer/src/module/H5WriteModule.cpp
+++ b/core-writer/src/module/H5WriteModule.cpp
@@ -7,7 +7,7 @@
 using namespace std;
 
 H5WriteModule::H5WriteModule(
-        RingBuffer& ring_buffer,
+        RingBuffer<FrameMetadata>& ring_buffer,
         const header_map& header_values,
         const H5Format& format) :
             ring_buffer_(ring_buffer),
diff --git a/core-writer/src/module/ZmqRecvModule.cpp b/core-writer/src/module/ZmqRecvModule.cpp
index 1ced3a7..a168c59 100644
--- a/core-writer/src/module/ZmqRecvModule.cpp
+++ b/core-writer/src/module/ZmqRecvModule.cpp
@@ -7,7 +7,7 @@
 using namespace std;
 
 ZmqRecvModule::ZmqRecvModule(
-        RingBuffer &ring_buffer,
+        RingBuffer<FrameMetadata> &ring_buffer,
         const header_map &header_values) :
             ring_buffer_(ring_buffer),
             header_values_(header_values),
@@ -144,6 +144,8 @@ void ZmqRecvModule::receive_thread(const string& connect_address)
                 continue;
             }
 
+            cout <<" Something!!!"<< endl;
+
             if (!is_saving_) {
                 continue;
             }