apache nifi replacetext processor - 'not a valid java regular expression' alert

[#1]

Hi! I've got my expression working in regexer.com. The goal is to remove all strings that start with '{"categoryid"' and end with '"},'

Expression: /({"categoryid")(.*?)("},)/gi

Text: {"categoryid":140,"categoryname":"Seasonal-Halloween"},

I'm using the 'replacetext' processor

1. Replacement strategy: Regex Replace
2. Evaluation Mode: Entire text

Although it works in regexr, I get this alert in the processor: 'not a valid java regular expression'.

Does anyone have any suggestions of how I can achieve my goal? Thanks!

[#2]

@Joseph Patrick

Try with below regex:

Search Value

(\\{\"categoryid\")(.*?)(\"\\},)

---

[#3]

Thanks for helping, @Shu! I now get this alert: