Redmine

I'd like the ability to update the "Assigned To" field to certain macros when an issue status is updated to certain statuses. For example, if I change the status to something like "Awaiting More Information," I'd like the Assigned To field to automatically be updated to the reporter (perhaps as a <<reporter>> macro, similar to <<me>>). This could be accomplished by adding a field to the Issue Statuses interface in administrative settings.