Customisation : Auto-complete field in Form

Hi

V13.27.1

I would like to auto-complete a field. More specifically, the “Finance Book” in “Journal Entry”.
I want to populate it with the “Default Finance Book” in the “Company” master

Based on the link below that I found, I thought it would be simple …
https://docs.erpnext.com/docs/v13/user/manual/en/customize-erpnext/articles/how-to-add-master-link-and-fetch-data-from-the-same

But it does not work.

My process…

  1. Go to Journal Entry summary page
  2. Select “Customise Form” (top right)
  3. Go to the “Finance Book” field.
  4. In the “Fetch From” field I enter : Company.default_finance_book
  5. Update
  6. Reload

Site is in developer mode.

If someone could point out my error I would appreciate it.

Update …

Apologies all … found my mistake … Capital letter …

I used …
Company.default_finance_book …

should be
company.default_finance_book…