XF 1.4 Solved toggle?

Hey guys! I was wondering if there was a way, maybe an addon that allows there to be a button, that when pressed (on your own post) adds a prefix saying "Solved". Basically, we have a troubleshooting section on our forum. We want users to be able to mark the thread as solved without having to edit the thread and change the prefix there. Please let me know if this is possible, if anyones done it, or you know anything. Thanks!