Search question on GTD implementation?

[Drew1278]

I'm setting up UR to handle my implementation of GTD. For Projects and Tasks which I cannot act on immediately, I have created a "Actionable Date" attribute. I would like to create searches that will only show items with an actionable date on or before the current date (hiding entries which cannot be addressed until a future date). Is it possible for the search value (actionable date) to be linked to the current date each time I open the saved search, or do I have to manually update the value and refresh the search each day?

Thanks for any help!