diff --git a/src/JsonRPCPlugin.cpp b/src/JsonRPCPlugin.cpp
index 4e3c723..395b015 100644
--- a/src/JsonRPCPlugin.cpp
+++ b/src/JsonRPCPlugin.cpp
@@ -148,14 +148,32 @@ JsonRPCResult JsonRPCPlugin::execute(QString method, QMap<QString, QVariant> par
             //disable the normals on all loaded clouds!
             ccHObject::Container clouds;
             newGroup->filterChildren(clouds, true, CC_TYPES::POINT_CLOUD);
-            for (ccHObject* cloud : clouds)
-            {
-                if (cloud)
-                {
+            for (ccHObject* cloud : clouds) {
+                if (cloud)  {
                     static_cast<ccGenericPointCloud*>(cloud)->showNormals(false);
                 }
             }
 
+            // apply matrix if possible
+            QList<QVariant> transformation = params["transformation"].toList();
+            if(transformation.size() == 4*4) {
+                std::vector<double> values(4*4);
+                bool success;
+                for(unsigned i; i < 4*4; ++i) {
+                    double d = transformation[i].toDouble(&success);
+                    qDebug() << transformation[i].toString() << transformation[i].toDouble();
+                    if(!success) {
+                        break;
+                    }
+                    values[((i%4)*4)+(i/4)] = d;
+                }
+                if(success) {
+                    ccGLMatrix mat = ccGLMatrix(values.data());
+                    qDebug() << "apply matrix: " << mat.toString();
+                    newGroup->setGLTransformation(mat);
+                }
+            }
+
             m_app->addToDB(newGroup);
             need_redraw = true;
             result = JsonRPCResult::success(0);
diff --git a/test/client_open.py b/test/client_open.py
index 50ea237..091cdef 100755
--- a/test/client_open.py
+++ b/test/client_open.py
@@ -6,7 +6,7 @@ import websockets
 async def hello():
     uri = "ws://localhost:6001"
     async with websockets.connect(uri) as websocket:
-        await websocket.send('{"jsonrpc": "2.0", "method": "open2", "params": {"filename": "/home/adib/Dokumente/teapt.ply"}, "id": 4}')
+        await websocket.send('{"jsonrpc": "2.0", "method": "open", "params": {"filename": "/home/adib/Dokumente/teapot.ply"}, "id": 4}')
         result = await websocket.recv()
         print("result: ", result)
 
diff --git a/test/client_open_matrix.py b/test/client_open_matrix.py
new file mode 100755
index 0000000..72cfdee
--- /dev/null
+++ b/test/client_open_matrix.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+import asyncio
+import websockets
+
+async def hello():
+    uri = "ws://localhost:6001"
+    async with websockets.connect(uri) as websocket:
+        await websocket.send('{"jsonrpc": "2.0", "method": "open", \
+                "params": { \
+                    "filename": "/home/adib/Dokumente/teapot.ply", \
+                    "filter":"PLY mesh (*.ply)", \
+                    "silent":true, \
+                    "transformation": [-0.5732937009507673, 0.8193193174792813, 0.007084582014166903, -161.35002666963268, \
+                        -0.8193308300123949, -0.5733179603522832, 0.001873784980341508, 320.67951255557966, \
+                        0.005596946702519333, -0.004730387192182964, 0.9999731500865392, -230.60935194531334, \
+                        0.0, 0.0, 0.0, 1.0]}, \
+                "id": 4}')
+        result = await websocket.recv()
+        print("result: ", result)
+
+asyncio.get_event_loop().run_until_complete(hello())
+
+
+