Searching with dynamic dates

We have a client that needs to look up documents that are 30 days old, based on the store date. They were able to do this in Fortis but now we cannot find a way to do it in DocuWare. Is there a work around for this?

Thanks

Update: Client is on 7.1 is there a module that you have to have to be able to use lists?

Update: We are using the URL Creator to do this. Thanks