#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "<PolicyId>(?<PolicyNumber>.+)<\/PolicyId>"
Local $sString = "IHub Service Name: retrieveUnderwritingReports IHub request: <retrieveUnderwritingReportsRequest><RequestHeader><ReportUserGroup>NET-CA</ReportUserGroup><ReportInteractiveBatchIndicator>I</ReportInteractiveBatchIndicator><ReportTransactionFunction>RQST</ReportTransactionFunction><ReportRequestType>PLH</ReportRequestType><ReportSystemId>PQQ-NIAX</ReportSystemId><ReportIacBillingState>CA</ReportIacBillingState><ReportAgentNumber>0087327</ReportAgentNumber><ReportSubUserId>0000000</ReportSubUserId><UserRequestReferenceNumber>HNC0054821022</UserRequestReferenceNumber><CurrentCarrierRequestFlag>Y</CurrentCarrierRequestFlag><PolicyId> HNC 00548210220 </PolicyId></RequestHeader><PlhRequest><PlhClientDetail><ClientId>00000000</ClientId><FirstName>YOLANDA</FirstName><LastName>GUILLORY</LastName><MiddleName>L</MiddleName><BirthDate>1972-07-29</BirthDate><PlhAddressDetails><CurrentStreetNumber>18309</CurrentStreetNumber><CurrentStreetName>MILMORE AVE</CurrentStreetName><CurrentCity>CARSON</CurrentCity><CurrentState>CA</CurrentState><CurrentZipCode5>90746</CurrentZipCode5><CurrentZipCode4>1753</CurrentZipCode4></PlhAddressDetails></PlhClientDetail></PlhRequest></retrieveUnderwritingReportsRequest>"
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