#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?<a1>\d{10})_(?<a2>\d{10})_(?<a3>\D{4})_(?<a4>\d{2}).(?<a5>\d{2}).(?<a6>\d{4})_(?<a7>\D{2})_(?<a8>\d{2}).(?<a9>\d{2}).(?<a10>\d{4})_(?<a11>\d{3})_(?<a12>\d+).(?<a13>\D{3})"
Local $sString = "2016000009_0002583207_From_04.01.2016_To_04.01.2016_001_1.PDF"
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