Substitution

To substitute the value of a property in a text box or in a Custom Action or a dialog box use square brackets: [ALLUSERS]

To substitute the value of an environment variable in a text box or in a Custom Action use square brackets with a % sign before the name of the environment variable: [%USERNAME]

NOTE: You do not use [] in the tables. Just type in the Property name directly.

Gotcha: You cannot set a property based of the value of another property. This is necessary to prevent creating circular references in the Property table (aka which gets its value first). Instead, you can set one property based on another by using a Custom Action Type 51.