diff --git a/include/osgDB/ObjectWrapper b/include/osgDB/ObjectWrapper
index ee0f7f9ac..86d459134 100644
--- a/include/osgDB/ObjectWrapper
+++ b/include/osgDB/ObjectWrapper
@@ -16,6 +16,7 @@
 #define OSGDB_OBJECTWRAPPER
 
 #include <osgDB/Serializer>
+#include <osg/ScriptEngine>
 
 namespace osgDB
 {
@@ -23,6 +24,15 @@ namespace osgDB
 typedef std::vector<std::string> StringList;
 extern OSGDB_EXPORT void split( const std::string& src, StringList& list, char separator=' ' );
 
+struct MethodObject : public osg::Referenced
+{
+    typedef std::vector< osg::ref_ptr<osg::Object> > Parameters;
+
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const = 0;
+
+    virtual ~MethodObject() {}
+};
+
 class OSGDB_EXPORT BaseCompressor : public osg::Referenced
 {
 public:
@@ -81,8 +91,14 @@ public:
 
     bool readSchema( const StringList& properties, const TypeList& types );
     void writeSchema( StringList& properties, TypeList& types );
-    void resetSchema()
-    { if ( _backupSerializers.size()>0 ) _serializers = _backupSerializers; }
+    void resetSchema() { if ( _backupSerializers.size()>0 ) _serializers = _backupSerializers; }
+
+    void addMethodObject(const std::string& methodName, MethodObject* mo);
+
+    typedef std::multimap< std::string, osg::ref_ptr<MethodObject> > MethodObjectMap;
+
+    MethodObjectMap& getMethodObjectMap() { return _methodObjectMap; }
+    const MethodObjectMap& getMethodObjectMap() const { return _methodObjectMap; }
 
 protected:
     ObjectWrapper() : _version(0) {}
@@ -96,6 +112,7 @@ protected:
     SerializerList _backupSerializers;
     TypeList _typeList;
     FinishedObjectReadCallbackList _finishedObjectReadCallbacks;
+    MethodObjectMap _methodObjectMap;
     int _version;  // Last updated version of the wrapper
 };
 
@@ -232,6 +249,8 @@ protected:
     typedef CLASS MyClass; \
     void wrapper_propfunc_##NAME(const char* domain, osgDB::ObjectWrapper* wrapper)
 
+#define ADD_METHOD_OBJECT( METHODNAME, METHODOBJECTCLASS ) wrapper->addMethodObject(METHODNAME, new METHODOBJECTCLASS());
+
 class OSGDB_EXPORT RegisterCompressorProxy
 {
 public:
diff --git a/include/osgDB/PropertyInterface b/include/osgDB/PropertyInterface
index 37a6cd074..d34b7407d 100644
--- a/include/osgDB/PropertyInterface
+++ b/include/osgDB/PropertyInterface
@@ -153,6 +153,19 @@ public:
     bool getSupportedProperties(const osg::Object* object, PropertyMap& properties, bool searchAssociates=true) const;
 
 
+    /// run method of object
+    bool run(void* objectPtr, const std::string& compoundClassName, const std::string& methodName, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const;
+
+    /// run method of object
+    bool run(osg::Object* object, const std::string& methodName, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const;
+
+    /// checked for support of specificed method
+    bool hasMethod(const std::string& compoundClassName, const std::string& methodName) const;
+
+    /// checked for support of specificed method
+    bool hasMethod(const osg::Object* object, const std::string& methodName) const;
+
+
     /// Properties supported for a range of classes, used for white and black lists
     typedef std::map<std::string, PropertyMap> ObjectPropertyMap;
 
diff --git a/src/osgDB/ObjectWrapper.cpp b/src/osgDB/ObjectWrapper.cpp
index 7f41b08cc..d3262db8e 100644
--- a/src/osgDB/ObjectWrapper.cpp
+++ b/src/osgDB/ObjectWrapper.cpp
@@ -308,6 +308,13 @@ void ObjectWrapper::writeSchema( StringList& properties, TypeList& types )
     }
 }
 
+void ObjectWrapper::addMethodObject(const std::string& methodName, MethodObject* mo)
+{
+    OSG_NOTICE<<"Inserting MethodObject "<<methodName<<std::endl;
+    _methodObjectMap.insert(MethodObjectMap::value_type(methodName, mo));
+}
+
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////////
 //
 // RegisterWrapperProxy
diff --git a/src/osgDB/PropertyInterface.cpp b/src/osgDB/PropertyInterface.cpp
index 5e426cad8..ea12e489c 100644
--- a/src/osgDB/PropertyInterface.cpp
+++ b/src/osgDB/PropertyInterface.cpp
@@ -279,7 +279,7 @@ osgDB::ObjectWrapper* PropertyInterface::getObjectWrapper(const osg::Object* obj
 osgDB::BaseSerializer* PropertyInterface::getSerializer(const osg::Object* object, const std::string& propertyName, osgDB::BaseSerializer::Type& type) const
 {
     osgDB::ObjectWrapper* ow = getObjectWrapper(object);
-    return ow ? ow->getSerializer(propertyName, type) : 0;
+    return (ow!=0) ? ow->getSerializer(propertyName, type) : 0;
 }
 
 osg::Object* PropertyInterface::createObject(const std::string& compoundClassName) const
@@ -521,6 +521,78 @@ bool PropertyInterface::getSupportedProperties(const osg::Object* object, Proper
 }
 
 
+bool PropertyInterface::run(void* objectPtr, const std::string& compoundClassName, const std::string& methodName, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+{
+    ObjectWrapper* ow = osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper(compoundClassName);
+    if (!ow) return false;
+
+    const ObjectWrapper::MethodObjectMap& methodObjectMap = ow->getMethodObjectMap();
+    ObjectWrapper::MethodObjectMap::const_iterator itr = methodObjectMap.find(methodName);
+    while ((itr!=methodObjectMap.end()) && (itr->first==methodName))
+    {
+        MethodObject* mo = itr->second.get();
+        if (mo->run(objectPtr, inputParameters, outputParameters)) return true;
+        ++itr;
+    }
+
+    const osgDB::StringList& associates = ow->getAssociates();
+    for(osgDB::StringList::const_iterator aitr = associates.begin();
+        aitr != associates.end();
+        ++aitr)
+    {
+        osgDB::ObjectWrapper* aow = osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper(*aitr);
+        if (aow)
+        {
+            const ObjectWrapper::MethodObjectMap& methodObjectMap = aow->getMethodObjectMap();
+            ObjectWrapper::MethodObjectMap::const_iterator itr = methodObjectMap.find(methodName);
+            while ((itr!=methodObjectMap.end()) && (itr->first==methodName))
+            {
+                MethodObject* mo = itr->second.get();
+                if (mo->run(objectPtr, inputParameters, outputParameters)) return true;
+                ++itr;
+            }
+        }
+    }
+
+    return false;
+}
+
+bool PropertyInterface::run(osg::Object* object, const std::string& methodName, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+{
+    return run(object, object->getCompoundClassName(), methodName, inputParameters, outputParameters);
+}
+
+bool PropertyInterface::hasMethod(const std::string& compoundClassName, const std::string& methodName) const
+{
+    ObjectWrapper* ow = osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper(compoundClassName);
+    if (!ow) return false;
+
+    const ObjectWrapper::MethodObjectMap& methodObjectMap = ow->getMethodObjectMap();
+    ObjectWrapper::MethodObjectMap::const_iterator itr = methodObjectMap.find(methodName);
+    if (itr!=methodObjectMap.end()) return true;
+
+    const osgDB::StringList& associates = ow->getAssociates();
+    for(osgDB::StringList::const_iterator aitr = associates.begin();
+        aitr != associates.end();
+        ++aitr)
+    {
+        osgDB::ObjectWrapper* aow = osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper(*aitr);
+        if (aow)
+        {
+            const ObjectWrapper::MethodObjectMap& methodObjectMap = aow->getMethodObjectMap();
+            ObjectWrapper::MethodObjectMap::const_iterator itr = methodObjectMap.find(methodName);
+            if (itr!=methodObjectMap.end()) return true;
+        }
+    }
+
+    return false;
+}
+
+bool PropertyInterface::hasMethod(const osg::Object* object, const std::string& methodName) const
+{
+    return hasMethod(object->getCompoundClassName(), methodName);
+}
+
 } // end of osgDB namespace
 
 
diff --git a/src/osgPlugins/lua/CMakeLists.txt b/src/osgPlugins/lua/CMakeLists.txt
index 3ec9e5816..da94edf0a 100644
--- a/src/osgPlugins/lua/CMakeLists.txt
+++ b/src/osgPlugins/lua/CMakeLists.txt
@@ -1,11 +1,7 @@
 SET(TARGET_H
-    MethodObject.h
     LuaScriptEngine.h
 )
 SET(TARGET_SRC
-    MethodObject.cpp
-    GeodeMethods.cpp
-    GroupMethods.cpp
     LuaScriptEngine.cpp
     ReaderWriterLua.cpp
 )
diff --git a/src/osgPlugins/lua/LuaScriptEngine.cpp b/src/osgPlugins/lua/LuaScriptEngine.cpp
index 1b073c080..a524b9169 100644
--- a/src/osgPlugins/lua/LuaScriptEngine.cpp
+++ b/src/osgPlugins/lua/LuaScriptEngine.cpp
@@ -12,7 +12,6 @@
 */
 
 #include "LuaScriptEngine.h"
-#include "MethodObject.h"
 
 #include <osg/io_utils>
 #include <osgDB/ReadFile>
@@ -101,7 +100,8 @@ static int callClassMethod(lua_State* _lua)
             inputParameters.push_back(lse->popParameterObject());
         }
 
-        if (osgDB::MethodsObjectManager::instance()->run(object, object->getCompoundClassName(), methodName, inputParameters, outputParameters))
+//        if (osgDB::MethodsObjectManager::instance()->run(object, object->getCompoundClassName(), methodName, inputParameters, outputParameters))
+        if (lse->getPropertyInterface().run(object, object->getCompoundClassName(), methodName, inputParameters, outputParameters))
         {
             for(osg::Parameters::iterator itr = outputParameters.begin();
                 itr != outputParameters.end();
@@ -556,7 +556,7 @@ int LuaScriptEngine::pushPropertyToStack(osg::Object* object, const std::string&
     osgDB::BaseSerializer::Type type;
     if (!_pi.getPropertyType(object, propertyName, type))
     {
-        if (osgDB::MethodsObjectManager::instance()->hasMethod(object->getCompoundClassName(), propertyName))
+        if (_pi.hasMethod(object, propertyName))
         {
             OSG_NOTICE<<"LuaScriptEngine::pushPropertyToStack("<<object<<", "<<propertyName<<") has method need to call it."<<std::endl;
             lua_pushlightuserdata(_lua, const_cast<LuaScriptEngine*>(this));
diff --git a/src/osgPlugins/lua/LuaScriptEngine.h b/src/osgPlugins/lua/LuaScriptEngine.h
index 661b08e8d..1543af239 100644
--- a/src/osgPlugins/lua/LuaScriptEngine.h
+++ b/src/osgPlugins/lua/LuaScriptEngine.h
@@ -45,6 +45,8 @@ class LuaScriptEngine : public osg::ScriptEngine
         /** get the lua_State object.*/
         lua_State* getLuaState() const { return _lua; }
 
+        osgDB::PropertyInterface& getPropertyInterface() const { return _pi; }
+
         int pushPropertyToStack(osg::Object* object, const std::string& propertyName) const;
         int setPropertyFromStack(osg::Object* object, const std::string& propertyName) const;
 
diff --git a/src/osgPlugins/lua/MethodObject.h b/src/osgPlugins/lua/MethodObject.h
index e2b5ca482..c3265bab6 100644
--- a/src/osgPlugins/lua/MethodObject.h
+++ b/src/osgPlugins/lua/MethodObject.h
@@ -15,10 +15,12 @@
 #define METHODSOBJECT_H
 
 #include <osg/ScriptEngine>
+#include <osgDB/ObjectWrapper>
 
 namespace osgDB
 {
 
+#if 0
 struct MethodObject : public osg::Referenced
 {
     typedef std::vector< osg::ref_ptr<osg::Object> > Parameters;
@@ -26,6 +28,7 @@ struct MethodObject : public osg::Referenced
     virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const = 0;
     virtual ~MethodObject() {}
 };
+#endif
 
 struct MethodsObject  : public osg::Referenced
 {
diff --git a/src/osgWrappers/serializers/osg/Geode.cpp b/src/osgWrappers/serializers/osg/Geode.cpp
index 10f1a5762..0c7614083 100644
--- a/src/osgWrappers/serializers/osg/Geode.cpp
+++ b/src/osgWrappers/serializers/osg/Geode.cpp
@@ -1,5 +1,6 @@
 #include <osg/Geode>
 #include <osg/Geometry>
+#include <osg/ValueObject>
 #include <osgDB/ObjectWrapper>
 #include <osgDB/InputStream>
 #include <osgDB/OutputStream>
@@ -15,7 +16,7 @@ static bool readDrawables( osgDB::InputStream& is, osg::Geode& node )
     for ( unsigned int i=0; i<size; ++i )
     {
         osg::Drawable* drawable = dynamic_cast<osg::Drawable*>( is.readObject() );
-        if ( drawable ) 
+        if ( drawable )
         {
             node.addDrawable( drawable );
         }
@@ -35,6 +36,66 @@ static bool writeDrawables( osgDB::OutputStream& os, const osg::Geode& node )
     os << os.END_BRACKET << std::endl;
     return true;
 }
+struct GeodeGetNumDrawables : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        osg::Geode* geode = reinterpret_cast<osg::Geode*>(objectPtr);
+        outputParameters.push_back(new osg::UIntValueObject("return", geode->getNumDrawables()));
+        return true;
+    }
+};
+
+
+struct GeodeGetDrawable : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        if (inputParameters.empty()) return false;
+
+        osg::Object* indexObject = inputParameters[0].get();
+        osg::UIntValueObject* uivo = dynamic_cast<osg::UIntValueObject*>(indexObject);
+        if (!uivo) return false;
+
+        osg::Geode* geode = reinterpret_cast<osg::Geode*>(objectPtr);
+        outputParameters.push_back(geode->getDrawable(uivo->getValue()));
+
+        return true;
+    }
+};
+
+struct GeodeAddDrawable : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        if (inputParameters.empty()) return false;
+
+        osg::Drawable* child = dynamic_cast<osg::Drawable*>(inputParameters[0].get());
+        if (!child) return false;
+
+        osg::Geode* geode = reinterpret_cast<osg::Geode*>(objectPtr);
+        geode->addDrawable(child);
+
+        return true;
+    }
+};
+
+
+struct GeodeRemoveDrawable : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        if (inputParameters.empty()) return false;
+
+        osg::Drawable* child = dynamic_cast<osg::Drawable*>(inputParameters[0].get());
+        if (!child) return false;
+
+        osg::Geode* geode = reinterpret_cast<osg::Geode*>(objectPtr);
+        geode->removeDrawable(child);
+
+        return true;
+    }
+};
 
 REGISTER_OBJECT_WRAPPER( Geode,
                          new osg::Geode,
@@ -42,4 +103,9 @@ REGISTER_OBJECT_WRAPPER( Geode,
                          "osg::Object osg::Node osg::Geode" )
 {
     ADD_USER_SERIALIZER( Drawables );  // _drawables
+
+    ADD_METHOD_OBJECT( "getNumDrawables", GeodeGetNumDrawables );
+    ADD_METHOD_OBJECT( "getDrawable", GeodeGetDrawable );
+    ADD_METHOD_OBJECT( "addDrawable", GeodeAddDrawable );
+    ADD_METHOD_OBJECT( "removeDrawable", GeodeRemoveDrawable );
 }
diff --git a/src/osgWrappers/serializers/osg/Group.cpp b/src/osgWrappers/serializers/osg/Group.cpp
index 9e8a40057..237db2ed6 100644
--- a/src/osgWrappers/serializers/osg/Group.cpp
+++ b/src/osgWrappers/serializers/osg/Group.cpp
@@ -1,4 +1,5 @@
 #include <osg/Group>
+#include <osg/ValueObject>
 #include <osgDB/ObjectWrapper>
 #include <osgDB/InputStream>
 #include <osgDB/OutputStream>
@@ -33,10 +34,82 @@ static bool writeChildren( osgDB::OutputStream& os, const osg::Group& node )
     return true;
 }
 
+struct GroupGetNumChildren : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        osg::Group* group = reinterpret_cast<osg::Group*>(objectPtr);
+        outputParameters.push_back(new osg::UIntValueObject("return", group->getNumChildren()));
+        return true;
+    }
+};
+
+struct GroupGetChild : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        if (inputParameters.empty()) return false;
+
+        osg::Object* indexObject = inputParameters[0].get();
+        OSG_NOTICE<<"GroupGetChild "<<indexObject->className()<<std::endl;
+
+        unsigned int index = 0;
+        osg::DoubleValueObject* dvo = dynamic_cast<osg::DoubleValueObject*>(indexObject);
+        if (dvo) index = static_cast<unsigned int>(dvo->getValue());
+        else
+        {
+            osg::UIntValueObject* uivo = dynamic_cast<osg::UIntValueObject*>(indexObject);
+            if (uivo) index = uivo->getValue();
+        }
+        osg::Group* group = reinterpret_cast<osg::Group*>(objectPtr);
+        outputParameters.push_back(group->getChild(index));
+
+        return true;
+    }
+};
+
+struct GroupAddChild : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        if (inputParameters.empty()) return false;
+
+        osg::Node* child = dynamic_cast<osg::Node*>(inputParameters[0].get());
+        if (!child) return false;
+
+        osg::Group* group = reinterpret_cast<osg::Group*>(objectPtr);
+        group->addChild(child);
+
+        return true;
+    }
+};
+
+
+struct GroupRemoveChild : public osgDB::MethodObject
+{
+    virtual bool run(void* objectPtr, osg::Parameters& inputParameters, osg::Parameters& outputParameters) const
+    {
+        if (inputParameters.empty()) return false;
+
+        osg::Node* child = dynamic_cast<osg::Node*>(inputParameters[0].get());
+        if (!child) return false;
+
+        osg::Group* group = reinterpret_cast<osg::Group*>(objectPtr);
+        group->removeChild(child);
+
+        return true;
+    }
+};
+
 REGISTER_OBJECT_WRAPPER( Group,
                          new osg::Group,
                          osg::Group,
                          "osg::Object osg::Node osg::Group" )
 {
     ADD_USER_SERIALIZER( Children );  // _children
+
+    ADD_METHOD_OBJECT( "getNumChildren", GroupGetNumChildren );
+    ADD_METHOD_OBJECT( "getChild", GroupGetChild );
+    ADD_METHOD_OBJECT( "addChild", GroupAddChild );
+    ADD_METHOD_OBJECT( "removeChild", GroupRemoveChild );
 }