Bug 119550 Default Value of Named Expression can't be saved in design file
New a report, set named expression in the report property editor add a named expression and set the default value add a report item, say table, to the layout set the named expression of the report item add a named expression and set hte default value save the report close the report and reopen, and there is no default named expression value displayed. open report design file with a text editor, there is no default value associate with the named expression
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/parser/UserPropertyStructureState.java
* @see org.eclipse.birt.report.model.util.AbstractParseState#end()
		 */
		public void end( ) throws SAXException
		{
			String value = text.toString( );
			if ( UserChoice.DISPLAY_NAME_PROP
					.equalsIgnoreCase( displayNamePropName ) )
			{
				choice.setDisplayName( value );
				choice.setDisplayNameKey( resourceKeyValue );
			}
		}
	}
	/**
	 * Parses the one property of user-define property definition.
	 */
	class UserPropertyState extends PropertyState
	{
		UserPropertyState( ModuleParserHandler theHandler,
				DesignElement element, PropertyDefn propDefn, IStructure struct )
		{
			super( theHandler, element, propDefn, struct );
		}
		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.birt.report.model.util.AbstractParseState#end()
		 */
		public void end( ) throws SAXException
		{