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
UserPropertyDefn propDefn = (UserPropertyDefn) struct;
				Object objValue = value;
				if ( propDefn.getTypeCode( ) != PropertyType.CHOICE_TYPE )
				{
					try
					{
						objValue = propDefn.validateValue(
								handler.getModule( ), value );
					}
					catch ( PropertyValueException e )
					{
						handler
								.getErrorHandler( ).semanticError( new UserPropertyException(
										element,
										name,
										UserPropertyException.DESIGN_EXCEPTION_INVALID_CHOICE_VALUE ) );
						return;
					}
				}
				choice.setValue( objValue );
			}
			else
				assert false;
		}
	}
	/**
	 * Parses the member of the user-defined choice( <code>UserChoice</code>),
	 * that is name, display name key, display name.
	 */
	class ChoiceTextPropertyState extends InnerParseState