How do I replace one character with something else, in a text - but only the nth occurence...

Let's say that I want to replace the second "." that occurs in one string with "!".

Like thus:

From

"This is a house. It has burnt down. How sad."

to

"This is a house. It has burnt down! How sad."

It should be flexible so I can change which of the three "." I want to get replaced at runtime.

So one time it would replace the first . to !, or another time it would do the last . to !

I have tried to look up RegexReplace, but I could not find any information on the "flag" part of it. There's no mention about the flags in the manual.

You could utilize tokenat with a loop and “.” As the divider. Then just rebuild the text a token at a time adding the “.” In between. Except when loopindex=2, you can add a “!” Instead.

Otherwise there may be some regex incantation, but you have to dig into the docs for that.

Thank you, I will attempt to do what you suggested. It sounds doable though!