How to save input from a custom html form to a .txt file?

Hello everybody,

i'm trying to save input from a custom html form in Solarwinds NetPerformanceMonitor into a .txt file. I wrote the code in 2 .asp files and it worked.

I added the code in a custom html template in the NetPerfMon and it is shown correctly. This is the code:

<form method="post" action="serial.asp">

Seriennummer des Zertifikats: <input type="text" size="50" name="serial" />
 
<label>Grund:

  <select name="reason">

    <option>0</option>

    <option>1</option>

    <option>2</option>

    <option>3</option>

    <option>4</option>

    <option>5</option>

    <option>6</option>

  </select>

</label>

<br><br><input type="submit" value="Zertifikat sperren"><br><br>

</form>

<!-- Green HR --><Table Border=0 CellSpacing=0 CellPadding=0 Width=100%><TR><TD BgColor=#008080><Img Src="certspc.gif" Alt="" Height=2 Width=1></TD></TR></Table>

<br><B>Gründe für die Sperrung:</B><br><br>

<table>
  <colgroup>
    <col width="40">
    <col width="250">
  </colgroup>
  <tr>
    <td>0</th>
    <td>Nicht angegeben</th>
  </tr>
  <tr>
    <td>1</th>
    <td>Schlüsselkompromittierung</th>
  </tr>
  <tr>
    <td>2</th>
    <td>Kompromittierung der Zertifizierungsstelle</th>
  </tr>
  <tr>
    <td>3</th>
    <td>Zuordnung geändert</th>
  </tr>
  <tr>
    <td>4</th>
    <td>Abgelöst</th>
  </tr>
  <tr>
    <td>5</th>
    <td>Ende des Vorgangs</th>
  </tr>
  <tr>
    <td>6</th>
    <td>Zertifikat blockiert</th>
  </tr>
</table>

The code for the "serial.asp" that should save the input into a txt file looks like this:

<%
Dim serial, reason
serial = Request.form("serial")
reason = Request.form("reason")

dim fs,f

set fs=Server.CreateObject("Scripting.FileSystemObject")
set f=fs.OpenTextFile("d:\revoke\serial.txt",8,true)

f.WriteLine(serial & ";" & reason)
f.Close
set f=nothing
set fs=nothing

%>

The question is, is it possible to do this in Solarwinds and if so, what am i doing wrong, because there is no txt file created.

Thanks for help!

P.S. I added a pic from the NetPerfMon Panel.