I really think this page should give more details about the storage procedure. Particularly mention that:
- URL need to use forward slashes
- The possible options that can be used for filter name (or provide a link to a page with more detailed explanation, or a list where the user can look up the possible values ('writer*', 'calc8', 'MS Excel 97', etc.)
Also see this question for reference: http://stackoverflow.com/questions/4743738/use-openoffice-uno-cli-with-c-to-create-a-spreadsheet
Its particularly annoying to see your application crash and have no exception message about whats going on, only to find our later that the URL had the wrong format, or that the filter was spelled incorrectly.