The popup msgbox text, i want to paste in specific cell & close msg box

Question

Function GetCookie(strUrl)
    With CreateObject("WinHttp.WinHttpRequest.5.1")
        .Open "GET", strUrl, False
        .SetRequestHeader "REFERER", strUrl
        .SetRequestHeader "User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)"
        .SetRequestHeader "Accept", "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5"
        .SetRequestHeader "Accept-Language", "en-us,en;q=0.5"
        .SetRequestHeader "Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7"
        .Send
        strCookie = .getAllResponseHeaders
        strCookie = Split(strCookie, vbCrLf)
        GetCookie = Trim(Split(Split(strCookie(5), ";")(0), ":")(1)) & "; " & Trim(Split(Split(strCookie(6), ";")(0), ":")(1))
    End With
End Function

Sub get_cookies()
    MsgBox (GetCookie("https://www.nseindia.com/option-chain"))
End Sub