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
String value = text.toString( );
			
			
			if ( UserPropertyDefn.TYPE_MEMBER.equalsIgnoreCase( name ) )
			{
				MetaDataDictionary dictionary = MetaDataDictionary
						.getInstance( );
				if ( StringUtil.isBlank( value ) )
				{
					value = PropertyType.STRING_TYPE_NAME;
				}
				PropertyType typeDefn = dictionary.getPropertyType( value );
				if ( typeDefn == null )
				{
					handler
							.getErrorHandler( ).semanticError( new UserPropertyException(
									element,
									( (UserPropertyDefn) struct ).getName( ),
									UserPropertyException.DESIGN_EXCEPTION_INVALID_TYPE ) );
					return;
				}
				( (UserPropertyDefn) struct ).setType( typeDefn );
			}
			else
			{
				super.end( );
			}
		}
	}
}