Environment Variables

The Environment Variables view lists all environment variables in the MSI and lets you review, edit, or add them.

Fields

Field	Description
Name	Sets the environment variable name.
Value	Sets the environment variable value. It can contain plain text or reference MSI properties such as [PROPERTY].
Component	Defines which component installs the environment variable.
Type	Defines whether the environment variable is installed for all users or for a specific user.

note

Every environment variable in an MSI must belong to a component.

Action on install

Choose what should happen to the environment variable during installation.

Option	Description
Create or Update	Adds a new environment variable or updates the value if it already exists.
Create if does not exist	Adds the environment variable only if it is not already present on the system.
Remove	Deletes the environment variable during installation.

Action on uninstall

Choose what should happen during uninstallation.

Option	Description
Remove	Deletes the environment variable during uninstall.
Leave	Keeps the environment variable unchanged during uninstall.

Replacement behavior

Choose how the environment variable should be modified during installation.

Option	Description
Append at end of current value (default)	Adds the new value to the end of the existing content.
Replace current value	Overwrites the existing value completely.
Insert at beginning of current value	Adds the new value to the start of the existing content.

Variable type

Option	Description
System (default)	Installs the environment variable for all users.
User	Installs the environment variable for a specific user.