Indicate the action that you want to take place when the associated feature is installed to the target system. Select one of the following from the drop-down menu:

- Set In conjunction with the Placement property, sets the value of an existing environment variable. This option creates the environment variable if it does not already exist on the target system, and then sets it during installation. If the environment variable exists on the target system, it is set during the installation.
- Create Creates the specified environment variable on the target system—if it doesn't already exist—and sets the variable's value.
- Remove Removes the specified environment variable from the target system.

If you set the On Install property to Remove, the Value property is cleared and becomes read-only.