o.AddItem(lcKey as String, lcValue as String, lnTimeoutSeconds as Integer)

lcKey as String
Key of the item to add.

If this value is omitted inside of Web Connection the key becomes the Script Name + QueryString which should uniquely identify this entry.

lcValue as String
String value of the item to add.

lnTimeoutSeconds as Integer
Optional - The timeout in seconds for the item. if not specified the default cache timeout is used.