#include <MsgBoxConstants.au3> ; to declare the Constants of MsgBox
Local $sRegex = "(?m-s)^.*<div class="info">(?:.*\n){5}"
Local $sString = " <div>" & @CRLF & _
" <div class="info">" & @CRLF & _
" line1" & @CRLF & _
" line2" & @CRLF & _
" line3" & @CRLF & _
" line4" & @CRLF & _
" line5" & @CRLF & _
" line6" & @CRLF & _
""
Local $sSubst = ""
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