diff --git a/WickedEngine/wiLoader.cpp b/WickedEngine/wiLoader.cpp
index 1ef8d7957..8d3f6ebf9 100644
--- a/WickedEngine/wiLoader.cpp
+++ b/WickedEngine/wiLoader.cpp
@@ -2486,6 +2486,54 @@ void Model::UpdateModel()
 		++iter;
 	}
 }
+void Model::Add(Object* value)
+{
+	if (value != nullptr)
+	{
+		objects.push_back(value);
+		if (value->mesh != nullptr)
+		{
+			meshes.insert(pair<string, Mesh*>(value->mesh->name, value->mesh));
+			for (auto& x : value->mesh->subsets)
+			{
+				materials.insert(pair<string, Material*>(x.material->name, x.material));
+			}
+		}
+	}
+}
+void Model::Add(Armature* value)
+{
+	if (value != nullptr)
+	{
+		armatures.push_back(value);
+	}
+}
+void Model::Add(Light* value)
+{
+	if (value != nullptr)
+	{
+		lights.push_back(value);
+	}
+}
+void Model::Add(Decal* value)
+{
+	if (value != nullptr)
+	{
+		decals.push_back(value);
+	}
+}
+void Model::Add(Model* value)
+{
+	if (value != nullptr)
+	{
+		objects.insert(objects.begin(), value->objects.begin(), value->objects.end());
+		armatures.insert(armatures.begin(), value->armatures.begin(), value->armatures.end());
+		decals.insert(decals.begin(), value->decals.begin(), value->decals.end());
+		lights.insert(lights.begin(), value->lights.begin(), value->lights.end());
+		meshes.insert(value->meshes.begin(), value->meshes.end());
+		materials.insert(value->materials.begin(), value->materials.end());
+	}
+}
 void Model::Serialize(wiArchive& archive)
 {
 	Transform::Serialize(archive);
diff --git a/WickedEngine/wiLoader.h b/WickedEngine/wiLoader.h
index 71ed1e19f..c3d8cbdf8 100644
--- a/WickedEngine/wiLoader.h
+++ b/WickedEngine/wiLoader.h
@@ -1045,6 +1045,12 @@ struct Model : public Transform
 	void LoadFromDisk(const string& dir, const string& name, const string& identifier);
 	void FinishLoading();
 	void UpdateModel();
+	void Add(Object* value);
+	void Add(Armature* value);
+	void Add(Light* value);
+	void Add(Decal* value);
+	// merge
+	void Add(Model* value);
 	void Serialize(wiArchive& archive);
 };
 
diff --git a/WickedEngine/wiVersion.cpp b/WickedEngine/wiVersion.cpp
index ea1c35344..4b16bcc3b 100644
--- a/WickedEngine/wiVersion.cpp
+++ b/WickedEngine/wiVersion.cpp
@@ -7,7 +7,7 @@ namespace wiVersion
 	// minor features, major bug fixes
 	const int minor = 8;
 	// minor bug fixes, alterations, refactors
-	const int revision = 30;
+	const int revision = 31;
 
 
 	long GetVersion()