Bug 210609 [Smoke]Crosstab is failed to preview in runtime
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/AggDataDropAdapter.java
return DNDService.LOGIC_FALSE;
				}
			}
			else if ( target instanceof ListBandEditPart )
			{
				return DNDService.LOGIC_TRUE;
			}
		}
		return DNDService.LOGIC_UNKNOW;
	}
	public boolean performDrop( Object transfer, Object target, int operation,
			DNDLocation location )
	{
		if ( transfer instanceof Object[] )
		{
		}
		
		
		SessionHandleAdapter.getInstance( )
				.getCommandStack( )
				.startTrans( TRANS_NAME );
		DataItemHandle dataHandle = DesignElementFactory.getInstance( )
				.newDataItem( null );
		try
		{
			if ( target instanceof TableCellEditPart )
			{
				CellHandle cellHandle = (CellHandle) ( (TableCellEditPart) target ).getModel( );
				cellHandle.addElement( dataHandle, CellHandle.CONTENT_SLOT );
			}