Arguments Property (Custom Actions)
Specifies command-line arguments for the selected custom action. Applies only to .exe custom actions.
Remarks
The Custom Actions editor provides default values for the Install, Commit, Rollback, or Uninstall phases of the installation, depending on which sequence the action is inserted beneath. You must assure that your .exe file accepts this argument, or change the property to match command-line arguments that are defined in your .exe file.
Note
This property is ignored when the InstallerClass property is set to true.