Drag table row to panel

Hi,
I want to realize a drag drop action on my page, drag one table row to another panel in the bottom of the window to display a new personalized component by using the information of this row, but it doesn't work, do you have any idea?
Thanks

resultTable.setDragMode(TableDragMode.ROW);
        resultTable.setDropHandler(new DropHandler()
        {
            
            @Override
            public AcceptCriterion getAcceptCriterion()
            {
                // TODO Auto-generated method stub
                return AcceptAll.get();
            }
            
            @Override
            public void drop(DragAndDropEvent event)
            {
                DataBoundTransferable t = (DataBoundTransferable) event
                        .getTransferable();
                if (!(t.getSourceContainer() instanceof Container.Hierarchical)) {
                    return;
                }
                Container.Hierarchical source = (Container.Hierarchical) t
                        .getSourceContainer();

                Object sourceItemId = t.getItemId();
                // find and convert the item(s) to move
                Object parentItemId = source.getParent(sourceItemId);
                String filePath = (String) source.getItem(sourceItemId).getItemProperty("Path").getValue();
                
             // move item(s) to the correct location in the table
                AbstractSelectTargetDetails dropData = ((AbstractSelectTargetDetails) event
                        .getTargetDetails());
                Object targetItemId = dropData.getItemIdOver();
                
                if(targetItemId != null)
                {
                    File jsonFileTmp = null;
                    try
                    {
                        String jsonStr = FileUtils.readFileToString(new File("D:\\test1.json"), "UTF-8");
                        jsonFileTmp = File.createTempFile("html", ".txt");
                        FileUtils.writeStringToFile(jsonFileTmp, jsonStr);
    
                    }
                    catch(IOException e)
                    {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    if(jsonFileTmp != null)
                    {
                        CustomComponent1 p = new CustomComponent1((new File(filePath)).getName(), jsonFileTmp.getName());
                        panel.setContent(p);
                    }
                }

                
            }
        });

any idea? I saw an example using the treetable, but how to do it with a panel?