Import notes from Drafts (Mac)

I followed this guide:

Running

jimmy-cli-windows DraftsExport.draftsExport --format drafts

Sorry I'm little bit confused, where I have to append:

--frontmatter joplin

Thanks

Edit:
I used

jimmy-cli-windows DraftsExport.draftsExport --format drafts --frontmatter joplin

And everything worked fine

About note title, it could be intereseting to limit to 80 characters, sanitizing eventually from charachters that can be not compatible with title format.