I've looked at the options.xml file, but can't change anything in there, even after checking security settings. Unsure what you mean about this download spttools, can't find that at this time.
Copy seadmin.exe to the STx\program folder because it needs some dll files there. Run that to look at or change options.xml.
I've been doing it wrong... I like xml though.
If you like xml you can change the override directive from "No" to "Yes" (without the quotes) in the Options.xml file that is probably in the C:\Program Files\Solid Edge STx\Preferences folder. That will allow you to edit the revision settings from SE. or you can change the delimiter here as well, as you can see it is set to the dash character -.
Go to settings/file locations, click on the top line reading "solid edge admin" and hit update at the top. See if that works.