Help Needed with Regular Expression

Hi All, i am newbie to splunk platform and seeking some help in writing a regular expression to pull a "" value from the XML type log. Sample XML is as mentioned below. 835065769Request ReadyRC-00005bss2016-01-29T11:27:15.951+11:002016-01-29T11:27:17.033+11:00 From above log i wish to access **NOTIFY_CORRELATION_ID** for which value = **4b24bd92-aee3-474a-8c99-9067fbb06ef1** Can anyone please suggest me a search sub string ? Example : | xpath field=message outfield=CORRELATION_ID "//RequestParameters/[ID='NOTIFY_CORRELATION_ID']/../value" Best Regards Rishi