Backreference in regex

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1

Hi,
is it possible to use backreference for regex in auditbeat/filebeat?
I am trying something like this:
\"1\":\"(\w+)\",\"2\":\"\1\"
and the following string should match:
"1":"string","2":"string"

But I am getting error:
Exiting: error initializing processors: failed to initialize condition: error parsing regexp: invalid escape sequence: \1

2

re2 does not support backreferences.

3

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