c# - 参照 ID を置換

Question

この上付き文字をテキストに置き換えようとしていますが、試してみるとプロパティまたはインデクサーのエラーが発生します'Microsoft.Office.Interop.Word.Find.Replacement' cannot be assigned to - -it is read only。申し訳ありませんが、Word ドキュメントの処理は初めてです。

        wordDoc.ActiveWindow.Selection.Find.Font.Superscript = -1;
        object forward = true;
        object wrap = WdFindWrap.wdFindStop;
        object format = true;
        object matchCase = false;
        object matchWholeWord = false;
        object matchWildcards = false;
        object matchSoundsLike = false;
        object matchAllWordForms = false;


        // Search all numeric superscripts
        while (wordDoc.ActiveWindow.Selection.Find.Execute(ref missing, ref matchCase, ref matchWholeWord, ref matchWildcards, ref matchSoundsLike, ref matchAllWordForms, ref forward, ref wrap, ref format, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing))
        {

            // Look for Numbered References
            if (Regex.IsMatch((wordDoc.ActiveWindow.Selection.Text).Trim(), @"^(\d+|\d+.?\d+?)$"))
            {
                object reference = wordDoc.ActiveWindow.Selection.Range;
                string refNo = Regex.Match((wordDoc.ActiveWindow.Selection.Text).Trim(), @"^(\d+|\d+.?\d+?)$").Value.ToString();
                MessageBox.Show(refNo);
                object replaceAll = Word.WdReplace.wdReplaceOne;

                wordDoc.ActiveWindow.Selection.Find.Text = refNo;
                wordDoc.ActiveWindow.Selection.Find.ClearFormatting();
                wordDoc.ActiveWindow.Selection.Find.Replacement = "Here";