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
this.propDefn = new UserPropertyDefn( );
		this.struct = (IStructure) propDefn;
		this.list = theList;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.util.AbstractParseState#startElement(java.lang.String)
	 */
	public AbstractParseState startElement( String tagName )
	{
		if ( tagName.equalsIgnoreCase( DesignSchemaConstants.PROPERTY_TAG ) )
			return new UserPropertyState( handler, element, propDefn, struct );
		if ( tagName.equalsIgnoreCase( DesignSchemaConstants.LIST_PROPERTY_TAG ) )
			return new ChoiceStructureListState( handler, element, propDefn,
					struct );
		if ( tagName.equalsIgnoreCase( DesignSchemaConstants.TEXT_PROPERTY_TAG ) )
			return new TextPropertyState( handler, element, struct );
		return super.startElement( tagName );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.util.AbstractParseState#end()
	 */
	public void end( ) throws SAXException
	{
		try
		{
			( (UserPropertyDefn) struct ).checkUserPropertyDefn( handler.getModule( ), element );