>Exactly, STREXTRACT() but Since I have Data in long strings not in Table I cant use STREXTRACT() perhaps. That is why I have taken the the contents of file in String using FILETOSTR()
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>>If I understood it correctly, simply use STREXTRACT() to determine the string to be replaced.

[for some reason, I thought this was sent, but apparently it wasn't...]


STREXTRACT() works with strings. Once you pass the file contents to a string, via FILETOSTR(), and unless you're dealing with a huge file size, you can (and probably should) work with STREXTACT().

What is the maximum file size of the file you need to process?