Libreoffice Writer Regular Expressions Find and Replace

I am using LibreOffice Writer 2026. I am having all sorts for trouble getting Find and Replace to work using regular expressions. Here is what I ma trying to do:
I need to replace every superscripted character with a format adjustment - they are just to small to read. I followed various guide (mostly based on older LibreOffice Writer version) - none worked. I cannot get past the “Search Key not found” Message.
I have regular expressions ticked (all guides assume is unpicked) - it definitely ticked!
I use “.+”, “.”, “+”, .+, ., + (not the commas its a list of search criteria) - all say the same, search key not found.
I need to find every subscript character int he document and make the larger. What am I doing wrong here?

Regards
Gerhard

If you use styles, then it is just a matter of changing the character style. I can assume that you are not using styles.

You want to replace the existing format (small superscript) with another format (bigger superscript).

  1. Select a sample superscript character and then click Format > Character > Position and see if Automatic is ticked for Superscript. Make a note of the size, 58%? Deselect.
  2. Click in the Find field then click Format button
  3. Select the Position tab and then select Superscript, check Automatic is ticked if it was ticked when you inspected it. OK
  4. Click in the Replace field then click the Format button
  5. Select the Position tab and then select Superscript, set the relative font size to say 70% and untick Automatic if you don’t mind the line spacing getting a bit bigger. OK
  6. Replace All

Notice that nothing was filled in either field but the format is displayed underneath each field

Note that different fonts might display the superscript more clearly

I think replace should also contain something like $1 to ensure the text is kept (with altered attributes) instead of removed.

Nah. Just the formatting is replaced, both fields are empty.

Thank you. That variant I never tried, as I assumed I have to use a pattern… I’ll try to remember this.