Global variables provide a set of variables that are always available to you within all scopes. You can have multiple environments, and only one can be active at a time. But you’ll have only one set of global variables, and they’ll always be available.
Environment and global variables will always be stored as strings. If you’re storing objects/arrays, be sure to JSON.stringify() them before storing, and JSON.parse() them while retrieving.
Manage global variables
Click the gear icon in the upper right corner of the Postman app and select “Manage Environments”. Click on the Globals button at the bottom of the modal to reveal a key-value editor to add, edit, and delete global variables. This is also where you can download your global variables as a single JSON file.
View global variables
Click the Quick Look icon in the upper right corner of the Postman app to display the environment and global variables. Clicking on the Edit link will open a modal for editing keys and values.