With ClearQuest queries (similar to JIRA's Filters) it is possible to define a basic filter, but to elect a particular field as being dynamic. In so doing the user is then shown a dialog in to which they can enter a value; or slect from a predfined list of values when the query is run. Simply entering this and pressing OK then runs the query.
eg. Show all closed bugs after a user defined date
The point is the user runs the query, a dialog is displayed into which they enter data and the results are displayed. The user doesnt have to go and edit the existing filter to change its behaviour.
Is there a similar feature available in JIRA?