Hi @PankajChaudhary,
when it comes to Regex operations (and especially with experimentation), nothing compares with @qqilihq’s Regex Extractor. Requires the Palladian Nodes to be installed, but they contain a bunch of useful functionality anyhow!
To see it in action, I created a small example workflow that shows how to extract groups/substrings from strings. More concrete I want to extract awesome from “hello awesome world” using the regex ^hello\s(\w*)\sworld$
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Best regards,
Daniel