Add the "Cookie" element to your page.
To write cookie, call the "Set a Cookie" action on the element and specify the cookie name, value and expiration date.

To read cookie, call the "Get a Cookie" action on the element and specify the cookie name. The value will be published to the state "Cookie Value" of the element (best to monitor for "Cookie Value Updated" event to get this cookie value).

To delete cookie, call the "Delete a Cookie" action on the element and specify the cookie name.

See the demo app for instructions.