Applescript that imports OmniOutliner file

Good day,

I have a workflow AppleScript that creates a folder for the project I am working on and a bunch of sub-folders as well. I would like to have an OmniOutliner file on my desktop or somewhere and have the Applescript prompt me for the location of the file. Then have a project created with the Ouliner contents as the tasks. Does anyone have any sample code I can look at that would point me in the right direction.