Help request about <goto>

Hello !
We have a little problem:
We want to create a "DTMF choice", and it should be start another application, but it doesn't work. The application code is:

<?xml version="1.0" encoding="iso-8859-1"?>
 <!DOCTYPE vxml PUBLIC "vxml" "">
 <vxml version="1.0">

 <form id="Auswahl">
      <field name ="Wahl">
           <prompt>
           Welchen Dienst möchten Sie starten?
           Mail, Zeitung, Radio oder Ende?
           </prompt>

           <dtmf>
           1 | 2 | 3 | 4
           </dtmf>

           <catch event="noinput">
           Ich habe Sie nicht verstanden.
           <reprompt/>
           </catch>

           <catch event="nomatch">
           Diesen Dienst bieten wir nicht an.
           <reprompt/>
           </catch>

           <filled>

                <if cond="Wahl=='1'">
                     <goto next="c:\Progamme\Internet Explorer\iexplore.exe http://www.gmx.de"/>

                <elseif cond="Wahl=='2'"/>
                     <goto next="C:\Debug.txt"/>

                <elseif cond="Wahl=='3'"/>
                     <goto next="C:\Programme\Internet Explorer\iexplore.exe http://www.jumpradio.de"/>

                <else/>
                     <disconnect/>
                </if>

           </filled>

      </field>

 </form>

 </vxml>

The problem is in the "<goto next="..."/>.
What we have to modify ?

Thanks you very much and Best Regards.
VoiceXML Italian User Group
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