I want create invoices from Odoo to GDocs. What I have:

1. In my Google Drive I create a text document and copy the url (https://docs.google.com/a/mydomain.com/document/d/xxx/edit)
2. In my Odoo (SaaS) I go to Settings/Google Drive/Templates 
3. Add a template name, for example: factura
4. Model: invoice
5. Template URL: I paste the URL from the created doc in Google Drive (https://docs.google.com/a/mydomain.com/document/d/xxx/edit)
6. Google Drive Name Pattern: I let by default Document %(name)s
7. Go to some invoice, in 'More' I see the Google Drive option with the name 'factura'. Click it
8. Generate a Google Docs document with name 'Document False'

My questions:

1. Why the generated document have title 'Document False' and not the name pattern from the configuration (Document %(name)s)??
2. Where can I find the variables for use in the Google Docs template? and how to use them in the template?

Thanks