Changing endnotes numbers style in existing doc

[jami51]

I have an existing document in which I used the endnote number format suggested by LO (Roman). I would now like to change it to Arabic numerals, but using Tools > Footnotes and Endnotes > Numbering - does not work; the numbers remain Roman. I would be grateful for your assistance.

In a new document that I created as a test, it works and I can change it.
I would be grateful for your assistance.
Jan

[ajlittoz]

You noticed it works in a new document. Then, the issue could be related to the nature of the old document. How is it saved: odt or doc(x)? What is your OS? And your LO version (please, cite info from Help>About LO)?