I don't think you can. I have tried in the past and was not able to do so. Just about everything else I could. My only suggestion would be to removed the the whole thing and start over. You could cut and paste the body of the work if that was correct.
I think you can edit the title within 12 hours of posting it, but can't afterwards... Not sure why that is the case. Send me a pm if you got something that needs done and I'll get it done.
