View inside Quick Tab on Panel Page -- argument flow

I have a panel page that is a generalized node view handler for several content types (which is amazingly cool functionality: separate displays per content type = awesome.). It gets a node ID argument from node/%, and there is also a user relationship defined.

I can embed a view into a panel and it works fine. When adding the view to a panel pane, the popup asks to explicitly choose a context (the node or the user relationship). The view is configured to receive a node ID argument and it works great.

I'm trying to use that same view in a Quick Tab inside a panel and can't seem to get the argument to flow through the Quick Tab. I do not know what to put in the "Provide a comma separated list of arguments to pass to the view." to get it to pass the node ID through. I have tried a lot of different things. I have not found any documentation on this specific part. I'd be grateful for some guidance.

Thanks! --j