After you have run a query, you may decide to modify a property alteration definition. Or you may want to create a new property alteration based on an existing query.
To modify a property alteration definition
The value for the property alteration definition appears in the Expression box and the appropriate property is selected.
The revised property alteration definition appears under Current Property Alterations. If you click Add instead of Update, the revised expression is added to the existing expression in the list.
To save the changes to a new query, enter a new name and description. Click OK.