So, I'm new to Odoo and still have trouble understanding how to find information on modules I'm injecting code into, in some cases.

In my case, on the page /odoo/accounting/10/bills?debug=1,

 I’m trying to add a button at the top :

The problem is with debug mode. I don't seem to understand where to find the data I need to resolve my issue :

Thank you for your help!

I’ll be glad to provide more information if needed.