Instance Behavior

Hie Guys,

I have created a link to an instance of a report by adding "&sInstance=Last" to the document link. The report is scheduled to run every Monday at 8 a.m. My question is - Will I always get the latest instance of the report when I click on the link I've created or will it only give the updated report for the current week? In other words, do I need to create a new link every week? Thanks.