Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
exp += "[\"" + DEUtil.escape( column.getName( ) ) + "\"]";
		return exp;
	}
	/**
	 * Returns the level between the holder and the given handle
	 * 
	 * @param holder
	 *            the handle of the holder
	 * @param baseElement
	 *            the handle of the base element
	 * 
	 * @return the level between the holder and the base element, or -1 if the
	 *         element is not a children of the holder
	 */
	public static int getBindingLevel( DesignElementHandle holder,
			DesignElementHandle baseElement )
	{
		int level = 0;
		for ( DesignElementHandle elementHandle = baseElement; elementHandle
				.getContainer( ) != null; elementHandle = getBindingHolder(
				elementHandle ).getContainer( ), level++ )
		{
			DesignElementHandle bindingHolder = getBindingHolder( elementHandle );
			if ( bindingHolder == holder )
			{
				return level;
			}
			if ( holder instanceof GroupHandle
					&& bindingHolder == holder.getContainer( ) )
			{