Help with Autocomplete

Hello
I am using a webservice with autocomplete.
it is getting all customer from my database. but the issue is that i need to passt hru a selected value from a radiobutton list to just get the customer form the choosen area

webservice code

Public Function GetCompletionList(ByVal prefixText As String, ByVal count As Integer) As String()

count = 10

Dim sql As String = "SELECT distinct kundnr FROM comp Where kundnr like '" & prefixText & "%'"
Dim MyConnString As String = "server=127.0.0.1;" _

& "uid=root;" _

& "" _

& "database=fambo;"

Dim conn As New MySqlConnection(MyConnString)

conn.Open()

Dim command As MySqlCommand = conn.CreateCommand()

command.Parameters.AddWithValue("prefixText", prefixText)

command.CommandText = sql

Dim da As New MySqlDataAdapter(sql, conn)

Dim dt As New DataTable()

da.Fill(dt)

Dim items As String() = New String(dt.Rows.Count - 1) {}

Dim i As Integer = 0

For Each dr As DataRow In dt.Rows
items.SetValue(dr("kundnr").ToString(), i)

i += 1

Next

Return items

End Function

asp code

<form id="form1" runat="server">

<div>

<asp1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">

<Services>

<asp:ServiceReference Path="AutoComplete.asmx" />

</Services>

</asp1:ToolkitScriptManager>

<asp1:TabContainer ID="TabContainer1" runat="server" Height="180px" Width="550px"

ActiveTabIndex="0">

<asp1:TabPanel runat="server" HeaderText="Kund register" ID="TabPanel1">

<ContentTemplate>

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">

<ContentTemplate>

<table class="style1">

<tr>

<td class="style3">

&nbsp;

</td>

<td class="style4">

&nbsp;

</td>

<td>

&nbsp;&nbsp;

<asp:RadioButtonList ID="radio1" runat="server">

<asp:ListItem id="Hkarngen" runat="server" checked="true" Text="Hauptvgen" Value="hauptvagen" />

<asp:ListItem id="Iskarnevalen" runat="server" Value="Iskarnevalen" />

</asp:RadioButtonList>

</td>

</tr>

<tr>

<td class="style3">

&nbsp;

</td>

<td class="style4">

<asp:Label ID="Label1" runat="server" Text="Kund"></asp:Label>

</td>

<td>

<asp:TextBox ID="txtkund" runat="server" Width="175px" autocomplete="off"></asp:TextBox>

&nbsp;&nbsp;

<asp:Label ID="lblinvalid" runat="server"></asp:Label>

</td>

</tr>

<tr>

<td class="style3">

&nbsp;

</td>

<td class="style4">

<asp:Label ID="Label2" runat="server" Text="Anvndare"></asp:Label>

</td>

<td>

<asp:TextBox ID="txtforetag" runat="server" Width="175px" Enabled="False">Ej aktiv</asp:TextBox>

</td>

</tr>

<tr>

<td class="style3">

&nbsp;

</td>

<td class="style4">

<asp:Label ID="Label3" runat="server" Text="Brick nummer"></asp:Label>

</td>

<td>

<asp:TextBox ID="txtmedia" runat="server" Width="175px"></asp:TextBox>

</td>

</tr>

<tr>

<td class="style3">

&nbsp;

</td>

<td class="style4">

&nbsp;

</td>

<td>

<asp:Button ID="btnsokkund" runat="server" Text="Sk kund" />

</td>

</tr>

</table>

<asp1:AutoCompleteExtender runat="server" ID="autoComplete1" TargetControlID="txtkund"

ServicePath="AutoComplete.asmx" ServiceMethod="GetCompletionList" MinimumPrefixLength="1"

CompletionInterval="100" EnableCaching="True" CompletionSetCount="12" FirstRowSelected="True" />

</ContentTemplate>

</asp:UpdatePanel>

</ContentTemplate>