assert type instanceof BooleanPropertyType;
	public boolean getBooleanProperty( ReportDesign design, String propName )	{		ElementPropertyDefn prop = getPropertyDefn( propName );		PropertyType type = MetaDataDictionary.getInstance( ).getPropertyType(				prop.getTypeCode( ) );		assert type instanceof BooleanPropertyType;		Object value = getProperty( design, propName );		return ( (BooleanPropertyType) type ).toBoolean( design, value );	}