#include <StringConstants.au3> ; to declare the Constants of StringRegExp
#include <Array.au3> ; UDF needed for _ArrayDisplay and _ArrayConcatenate
Local $sRegex = "(?m)(^(DE|AT|CH|SI)\-([0-9]{4}|A000)\-(560[0-5]{1})$)|(^(DE|AT|CH|SI)\-([0-9]{4}|A000)\-(560[0-5]{1})\-X$)"
Local $sString = "AT-0815-5600" & @CRLF & _
"AT-0815-5600-X" & @CRLF & _
"AT-0815-5500" & @CRLF & _
"DE-0815-5601" & @CRLF & _
"CH-0815-5602" & @CRLF & _
"CH-0815-5602-X" & @CRLF & _
"SI-1234-1234-X"
Local $aArray = StringRegExp($sString, $sRegex, $STR_REGEXPARRAYGLOBALFULLMATCH)
Local $aFullArray[0]
For $i = 0 To UBound($aArray) -1
_ArrayConcatenate($aFullArray, $aArray[$i])
Next
$aArray = $aFullArray
; Present the entire match result
_ArrayDisplay($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