I know there are a lot of postings and wiki-entries. I've read almost all of them and tested it, especially this expample http://manual.mantisbt.org/manual.custo ... values.php ...
But it is frustrating, it wont work! Usually i'm going to test to add only one additional status value, without any success.
What problems are you guys running into? Are you trying to add a new workflow status but it isn't showing up anywhere? Where are you looking for it (in the workflow threshold screen)?