Bug 205938 Cross Tab: 2.2.9 Measures from a cube can be dragged and dropped to left and not to right.
If user wants to show an existing measure on a cross tab that he has defined in a cube, he can only add it to the left and not to the right of an existing measure. Proposed solution User should be ale to add a measure both to the left and right of an existing measure.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editpolicies/ReportFlowLayoutEditPolicy.java
return new PasteCommand( (DesignElementHandle) child.getModel( ),
				parentModel,
				insertionReference == null ? null
						: (DesignElementHandle) insertionReference.getModel( ),
				false );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editpolicies.OrderedLayoutEditPolicy#createAddCommand(org.eclipse.gef.EditPart,
	 *      org.eclipse.gef.EditPart)
	 */
	protected Command createAddCommand( EditPart child, EditPart after )
	{
		return createAddCommand( null, child, after );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editpolicies.ConstrainedLayoutEditPolicy#createAddCommand(org.eclipse.gef.EditPart,
	 *      java.lang.Object)
	 */
	protected org.eclipse.gef.commands.Command createAddCommand(
			EditPart child, Object constraint )
	{
		return null;
	}
	/*
	 * (non-Javadoc)
	 *