#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = ""Description":.*?<td>CCGcode<\/td><td>(00C)<\/td>"
Local $sString = ""properties": {" & @CRLF & _
" "Name": "Darlington"," & @CRLF & _
" "Description": "<br><br><br> <table border=\"1\" padding=\"0\"> <tr><td>CCGcode</td><td>00C</td></tr> <tr><td>CCGname_short</td><td>Darlington</td></tr>"" & @CRLF & _
"}" & @CRLF & _
""
Local $sSubst = ""CCGCode":"\1",\n \0"
Local $sResult = StringRegExpReplace($sString, $sRegex, $sSubst)
MsgBox($MB_SYSTEMMODAL, "Result", $sResult)
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