import Project by LoadFromFile

Hi.

How I can import Project data with the use of wt.load.LoadFromFile?
Where can I find examples? Based on a example WTPart import in "Windchill Data LoadingReference and BestPractices Guide" do next:

>windchill wt.load.LoadFromFile <path>\Windchill\loadXMLFiles\generalProjectTemplate.xml -CONT_PATH/wt.inf.container.OrgContainer=MuOrg/Default/Projects

And got the result code: 9 or 5. What does this code and where you can see a list of these result codes?
Is the correct method I use to load data Project?

Thanks.