web-services - soap 呼び出しを使用して Excel で UDF を作成すると、#Value が返されます。私は何を間違っていますか？

Question

これが私が書いたコードです。Web サービスの詳細については、https://tckimlik.nvi.gov.tr/Service/KPSPublic.asmx?op=TCKimlikNoDogrulaをご覧ください。

Function tckimlik(ad As String, soyad As String, tckn As Double, dy As Integer) As String
Dim responseText As String
    Dim sURL As String
    Dim sEnv As String
    Dim xmlhtp As New MSXML2.XMLHTTP
    Dim xmlDoc As New DOMDocument
    Dim startPos, endPos, openTag, closeTag, startTagPos, sid As String
    sURL = "http://tckimlik.nvi.gov.tr/WS/TCKimlikNoDogrula"
    sEnv = "<?xml version=""1.0"" encoding=""utf-8""?>"
    sEnv = sEnv & "<soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"">"
    sEnv = sEnv & " <soap:Body>"
    sEnv = sEnv & "<TCKimlikNoDogrula xmlns=""http://tckimlik.nvi.gov.tr/WS""> "
    sEnv = sEnv & "<TCKimlikNo>"
    sEnv = sEnv & tckn
    sEnv = sEnv & "</TCKimlikNo>"
    sEnv = sEnv & "<Ad>"
    sEnv = sEnv & ad
    sEnv = sEnv & "</Ad>"
    sEnv = sEnv & "<Soyad>"
    sEnv = sEnv & soyad
    sEnv = sEnv & "</Soyad>"
    sEnv = sEnv & "<DogumYili>"
    sEnv = sEnv & dy
    sEnv = sEnv & "</DogumYili>"
    sEnv = sEnv & " </TCKimlikNoDogrula>"
    sEnv = sEnv & " </soap:Body>"
    sEnv = sEnv & "</soap:Envelope>"

With xmlhtp
        .Open "post", sURL, False
        .setRequestHeader "Host", "tckimlik.nvi.gov.tr"
        .setRequestHeader "Content-Type", "text/xml; charset=utf-8"
        .setRequestHeader "soapAction", "http://tckimlik.nvi.gov.tr/WS/TCKimlikNoDogrula"
        .send sEnv
        xmlDoc.LoadXML .responseText
        responseText = .responseText
    End With
tckimlik = responseText


End Function

ありがとう