#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?i)^(U)(AA|AB|BA|BB|CC|CD|EA|FA|GA|HA|IA|JA|AE|CE|GE|FB|JB|GB|HL|IL|JL)(E|U|W)(E)(DN|AZ)(\d{2,2})(\d)(\d{8,8})$"
Local $sString = "UCCUEDN15000003676"
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