Reporting Services 2010 RDLC: Passing Querystring Parameters from RDLC

I am trying to create a simple RDLC report that shows some data and has a "select" link that sends the browser to a specific url with some data in the querystring (key).

In vs2010 report designer I can double click on a column then select an action and there are a bunch of ticks that seem like they might work. But none of them do.

In the "enable as a hyperlink" section I can select "go to url", but there are no parameters to transfer.

I also tried to "go report" that I could trick him into doing what I want. There are parameters here, but it knows my url is not a report and the "select" link is displayed as text (not clickable).

Any ideas? I'm pretty sure this worked in vs2008 and it looks like it should be doable. But I've been pulling my hair out on this for hours now.