(1) Explain your problem, don't simply post "This isn't working". What were you doing when you faced the problem? What have you tried to resolve - did you look for a solution using "Search" ? Has it happened just once or several times?
(2) It's also good to get feedback when a solution is found, return to the original post to explain how it was resolved so that more people can also use the results.
http://www.acq.osd.mil/evm/docs/OTB-OTS%20Guide%20121205.pdf
A lot of tweaking might be necessary if you want to keep old variance.
Be reminded that targeting an outdated baseline is not a good idea.