Felt kommer ik med i basen

På min ene side har denne :
<%
Response.Write ("<a href=""tilfoj_brugersvogn.asp?ID=" & rsGuestbook("ID_no") & """>")
Response.write ("<FONT size=1 face=verdana>Tilføj vogn til min samling</FONT>")
Response.Write ("</a>")
%>

og min tilfoj_brugersvogn.asp ser således ud :

<%
'Dimension variables
Dim adoCon              'Holds the Database Connection Object
Dim rsAddComments          'Holds the recordset for the new record to be added
Dim strSQL              'Holds the SQL query to query the database

'Create an ADO connection object
Set adoCon = Server.CreateObject("ADODB.Connection")

'Set an active connection to the Connection object using a DSN-less connection
adoCon.Open "DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=" & Server.MapPath("database.mdb")

'Create an ADO recordset object
Set rsAddComments = Server.CreateObject("ADODB.Recordset")

'Initialise the strSQL variable with an SQL statement to query the database
strSQL = "SELECT * FROM brugersvogne;"

'Set the cursor type we are using so we can navigate through the recordset
rsAddComments.CursorType = 2

'Set the lock type so that the record is locked by ADO when it is updated
rsAddComments.LockType = 3

'Open the recordset with the SQL query
rsAddComments.Open strSQL, adoCon

'Tell the recordset we are adding a new record to it
rsAddComments.AddNew

'Add a new record to the recordset
rsAddComments.Fields("BrugerID")     = Session("UserID")
rsAddComments.Fields("VognID")         = request.querystring("ID_no")


'Write the updated recordset to the database
rsAddComments.Update

'Reset server objects
rsAddComments.Close
Set rsAddComments = Nothing
Set adoCon = Nothing

Response.Redirect "vogne_view.asp?sort=producent"
%>

BrugerID kommer ind, men ikke ID_no
Hvorfor ?