Regular Expression or Grok to extract value

Graylog Central (peer support)
1

I need Regex or Grok to extract number of miliseconds in below event/message (i.e i need to extract 762 from in [762] Millies ):

2019-07-02 16:56:44.824 [SUBSCRIBER_PROFILE-1115501650-9f7a9309-6bd7-44fb-83ea-2ee0ff37a50d] Response [<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<subscriberProfileResponse>
    <errorCode>99999</errorCode>
    <responseStatus>FAILED</responseStatus>
</subscriberProfileResponse>
] in [762] Millies.
2

Would something like ^.*in\s\[(.*?)\].*$ work?

Appears to get the expected results when testing on RegExr: https://regexr.com/4hfde

3

Working properly.Thanks!

4

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