#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = ""window_indicator":\s*([\-\d\.]+)"
Local $sString = "Line1\{"_check_id":"09b0f4e658a86000","_check_name":"Window status check","_level":"info","_measurement":"notifications","_message":"Check: Window status check is: info 0","_notification_endpoint_id":"09b162491aca8000","_notification_endpoint_name":"nc:8087","_notification_rule_id":"09b18e2dabebc000","_notification_rule_name":"Status is INFO notification rule (2m)","_source_measurement":"window_indicator","_source_timestamp":1658233200000000000,"_start":"2022-07-19T12:19:00Z","_status_timestamp":1658233200000000000,"_stop":"2022-07-19T12:22:00Z","_time":"2022-07-19T12:22:00Z","_type":"threshold","_version":1,"window_indicator":0}"
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYFULLMATCH)
; Present the entire match result
_ArrayDisplay($aArray, "Result")
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for AutoIt, please visit: https://www.autoitscript.com/autoit3/docs/functions/StringRegExp.htm