diff --git a/HeartTests/tst_testprotockol.cpp b/HeartTests/tst_testprotockol.cpp
index ac8afb5..2a105d8 100644
--- a/HeartTests/tst_testprotockol.cpp
+++ b/HeartTests/tst_testprotockol.cpp
@@ -13,6 +13,7 @@
 #include <bigdatatest.h>
 #include <ecdsaauthtest.h>
 #include <upgradedatabasetest.h>
+#include <multiversiontest.h>
 
 #define TestCase(name, testClass) \
     void name() { \
@@ -39,6 +40,8 @@ private slots:
 #endif
 
     TestCase(upgradeDataBaseTest, UpgradeDataBaseTest)
+    TestCase(multiVersionTest, MultiVersionTest)
+
 
     // END TEST CASES
 
diff --git a/HeartTests/units/multiversiontest.cpp b/HeartTests/units/multiversiontest.cpp
index dcc6a24..6454133 100644
--- a/HeartTests/units/multiversiontest.cpp
+++ b/HeartTests/units/multiversiontest.cpp
@@ -7,40 +7,27 @@
 
 #include "multiversiontest.h"
 
-class TestingClient: public QH::AbstractNode {
-
-    // AbstractNode interface
+class MultiVersionPkg {
 public:
-    const QH::PKG::Ping& getPing() const {
-        return _ping;
-    }
-
-    NodeType nodeType() const override {
-        return NodeType::Node;
-    };
-
-protected slots:
-    void receivePing(const QSharedPointer<QH::PKG::Ping>& ping) override {
-        _ping = *ping;
-    };
-
-private:
-    QH::PKG::Ping _ping;
+    int v2;
+    int v1;
+    int lastSerializedFrom = 0;
+    int lastSerializedto = 0;
 };
 
-class MultiVersionPkg: public QH::PKG::MultiversionData {
+class MultiVersionPkg1: public QH::PKG::MultiversionData, public MultiVersionPkg {
     QH_PACKAGE("MultiVersionPkg")
 
 public:
-    MultiVersionPkg():  QH::PKG::MultiversionData(
+    MultiVersionPkg1():  QH::PKG::MultiversionData(
             {
                 {0, // version 0
                     {
-                        [this](QDataStream& stream){ // from
+                        [this](QDataStream& stream) -> QDataStream&{ // from
                             stream >> v1;
                             return stream;
                         },
-                        [this](QDataStream& stream){ // to
+                        [this](QDataStream& stream) -> QDataStream&{ // to
                             stream << v1;
 
                             return stream;
@@ -49,13 +36,13 @@ public:
                 },
                 {1, // version 1
                     {
-                        [this](const QDataStream* stream){ // from
+                        [this](QDataStream& stream) -> QDataStream&{ // from
                             stream >> v1;
                             stream >> v2;
 
                             return stream;
                         },
-                        [this](const QDataStream* stream){ // to
+                        [this](QDataStream& stream) -> QDataStream&{ // to
                             stream << v1;
                             stream << v2;
                             return stream;
@@ -64,9 +51,126 @@ public:
                 }
             }
             ) {};
-    int v1;
-    int v2;
+};
 
+class MultiVersionPkg2: public QH::PKG::MultiversionData, public MultiVersionPkg {
+    QH_PACKAGE("MultiVersionPkg")
+
+public:
+    MultiVersionPkg2():  QH::PKG::MultiversionData(
+            {
+                {0, // version 0
+                    {
+                        [this](QDataStream& stream) -> QDataStream&{ // from
+                            lastSerializedFrom = 0;
+                            stream >> v1;
+                            return stream;
+                        },
+                        [this](QDataStream& stream) -> QDataStream&{ // to
+                            lastSerializedto = 0;
+
+                            stream << v1;
+
+                            return stream;
+                        }
+                    }
+                },
+                {1, // version 1
+                    {
+                        [this](QDataStream& stream) -> QDataStream&{ // from
+                           lastSerializedFrom = 1;
+
+                            stream >> v1;
+                            stream >> v2;
+
+                            return stream;
+                        },
+                        [this](QDataStream& stream) -> QDataStream&{ // to
+                            lastSerializedto = 1;
+
+                            stream << v1;
+                            stream << v2;
+                            return stream;
+                        }
+                    }
+                },
+                {2, // version 2
+                    {
+                        [this](QDataStream& stream) -> QDataStream&{ // from
+                            lastSerializedFrom = 2;
+
+                            stream >> v2;
+
+                            return stream;
+                        },
+                        [this](QDataStream& stream) -> QDataStream&{ // to
+                            lastSerializedto = 2;
+
+                            stream << v2;
+                            return stream;
+                        }
+                    }
+                }
+            }
+            ) {};
+};
+
+template <class Base>
+class TestAPI: public QH::iParser {
+public:
+    TestAPI(QH::AbstractNode* parentNode): QH::iParser(parentNode) {
+        registerPackageType<Base>();
+    }
+
+    // iParser interface
+public:
+
+    QH::ParserResult parsePackage(const QSharedPointer<QH::PKG::AbstractData> &pkg,
+                                  const QH::Header &,
+                                  QH::AbstractNodeInfo *) override {
+
+        if (pkg->cmd() == Base::command()) {
+            data = pkg;
+            return QH::ParserResult::Processed;
+        }
+
+        return QH::ParserResult::NotProcessed;
+    };
+    int version() const override {return 0;};
+    QString parserId() const override {return "BigDataTestParser";};
+
+    QSharedPointer<QH::PKG::AbstractData> getData() const{
+        return data;
+    };
+
+private:
+    QSharedPointer<QH::PKG::AbstractData> data = nullptr;
+
+};
+
+template <class Base>
+class TestingClient: public QH::AbstractNode {
+
+    // AbstractNode interface
+public:
+    TestingClient() {
+        _parser = addApiParser<TestAPI<Base>>();
+    }
+
+    bool sendRequest(const Base& data, int port) {
+        return sendData(&data, QH::HostAddress(TEST_LOCAL_HOST, port));
+    }
+
+    NodeType nodeType() const override {
+        return NodeType::Node;
+    };
+
+    const QSharedPointer<QH::iParser>& parser() const {
+        return _parser;
+    }
+
+private:
+    QSharedPointer<QH::iParser> _parser;
 };
 
 MultiVersionTest::MultiVersionTest() {
@@ -75,4 +179,59 @@ MultiVersionTest::MultiVersionTest() {
 
 void MultiVersionTest::test() {
 
+    TestingClient<MultiVersionPkg1> nodeWithV1;
+    TestingClient<MultiVersionPkg2> nodeWithV2;
+
+    int nodev1Port = TEST_PORT + 5;
+    int nodev2Port = TEST_PORT + 6;
+
+    QVERIFY(nodeWithV1.run(TEST_LOCAL_HOST, nodev1Port));
+    QVERIFY(nodeWithV2.run(TEST_LOCAL_HOST, nodev2Port));
+
+    // from new to old
+    {
+        MultiVersionPkg2 pkg;
+        pkg.v1 = 10;
+        pkg.v2 = 20;
+
+        QVERIFY(nodeWithV2.sendRequest(pkg, nodev1Port));
+
+        // should use the maximum available serialization. it is 1
+        QVERIFY(pkg.lastSerializedto == 1);
+
+        QVERIFY(wait([&nodeWithV1](){
+            return nodeWithV1.parser().staticCast<TestAPI<MultiVersionPkg1>>()->
+                   getData().staticCast<MultiVersionPkg1>()->lastSerializedFrom == 1;
+        }, WAIT_RESPOCE_TIME));
+
+        auto data = nodeWithV1.parser().staticCast<TestAPI<MultiVersionPkg1>>()->
+                    getData().staticCast<MultiVersionPkg1>();
+
+        QVERIFY(data->v1 ==  pkg.v1);
+        QVERIFY(data->v2 ==  pkg.v2);
+    }
+
+    // from old to new
+
+    {
+        MultiVersionPkg1 pkg;
+        pkg.v1 = 10;
+        pkg.v2 = 20;
+
+        QVERIFY(nodeWithV1.sendRequest(pkg, nodev1Port));
+
+        // should use the maximum available serialization. it is 1
+        QVERIFY(pkg.lastSerializedto == 1);
+
+        QVERIFY(wait([&nodeWithV2](){
+            return nodeWithV2.parser().staticCast<TestAPI<MultiVersionPkg2>>()->
+                   getData().staticCast<MultiVersionPkg2>()->lastSerializedFrom == 1;
+        }, WAIT_RESPOCE_TIME));
+
+        auto data = nodeWithV2.parser().staticCast<TestAPI<MultiVersionPkg2>>()->
+                    getData().staticCast<MultiVersionPkg2>();
+
+        QVERIFY(data->v1 ==  pkg.v1);
+        QVERIFY(data->v2 ==  pkg.v2);
+    }
 }
diff --git a/src/private/apiversion.cpp b/src/private/apiversion.cpp
index ad3e75f..51ccfd1 100644
--- a/src/private/apiversion.cpp
+++ b/src/private/apiversion.cpp
@@ -16,7 +16,6 @@ APIVersion::APIVersion() {
 }
 
 QDataStream &APIVersion::fromStream(QDataStream &stream) {
-    AbstractData::fromStream(stream);
 
     stream >> _apisVersions;
     stream >> _packagesVersions;
diff --git a/src/public/packages/multiversiondata.h b/src/public/packages/multiversiondata.h
index 3785c5b..bde71a4 100644
--- a/src/public/packages/multiversiondata.h
+++ b/src/public/packages/multiversiondata.h
@@ -28,25 +28,38 @@ struct SerializationBox {
  *  @code{cpp}
  *
  *      class MyPackage: public MultiversionData {
- *          MyPackage(): MultiversionData(
- *              {0, {[](auto stream){
- *                  // some code from stream for version 0 ;
- *                  return stream;
- *              },{[](auto stream){
- *                  // some code to stream for version 0 ;
- *                  return stream;
- *              }},
- *
- *              1, {[](auto stream){
- *                  // some code from stream for version 1 ;
- *                  return stream;
- *              },{[](auto stream){
- *                  // some code to stream for version 1 ;
- *                  return stream;
- *              }},}
- *          ) {
- *          }
- *      }
+            MyPackage():  QH::PKG::MultiversionData(
+                    {
+                        {0, // version 0
+                            {
+                                [this](QDataStream& stream) -> QDataStream&{ // from
+                                    stream >> v1;
+                                    return stream;
+                                },
+                                [this](QDataStream& stream) -> QDataStream&{ // to
+                                    stream << v1;
+
+                                    return stream;
+                                }
+                            }
+                        },
+                        {1, // version 1
+                            {
+                                [this](QDataStream& stream) -> QDataStream&{ // from
+                                    stream >> v1;
+                                    stream >> v2;
+
+                                    return stream;
+                                },
+                                [this](QDataStream& stream) -> QDataStream&{ // to
+                                    stream << v1;
+                                    stream << v2;
+                                    return stream;
+                                }
+                            }
+                        }
+                    }
+                    ) {};
  *  @endcode
  *
  *  @note the default toBytes function of this class will be convert your class using latest version.