value = getColumnName( parameter.getLabelExpr( ) );
value = getColumnName( parameter, COLUMN_DISPLAY_TEXT );
		public Object getValue( Object element, String property )		{			if ( element instanceof ScalarParameterHandle )			{				ScalarParameterHandle parameter = (ScalarParameterHandle) element;				String value = null;				if ( COLUMN_NAME.equals( property ) )				{					if ( element == newParameter )					{						value = ""; //$NON-NLS-1$					}					else					{						value = parameter.getName( );					}				}				else if ( COLUMN_VALUE.equals( property ) )				{					value = getColumnName( parameter.getValueExpr( ) );				}				else if ( COLUMN_DISPLAY_TEXT.equals( property ) )				{					value = getColumnName( parameter.getLabelExpr( ) );				}				if ( value == null )				{					value = ""; //$NON-NLS-1$				}				return value;			}			return ""; //$NON-NLS-1$		}