filter for rapid board in Kanban

[domingo mihovilovic]

I started using a rapid board to track a Kanban project. To get stories into the board I am using FixTarget="Next" that use in the filter ("Next" is a fake name just to add the stories to the board). The problem is that when I release a set of stories and enter the final target when prompted (let's say FOO) the stories have then FixTarget ="Next,FOO" and therefore do not disappear from the board.
What field or tag do you recommend to make stories show up in a rapid board for Kanban projects?

[Earl McCutcheon]

To get A story to show up you can add the following to your JQL Query:

type in (Story)