Voicexml grammar

I try to use grammar in my voicexml file. At first i tried an In-line grammar. I used an example from a website, but it doesn't work.

here is the code:

<?xml version="1.0" encoding="UTF-8"?> 
<vxml [...]  version="2.0">


<form id="test">

<field name="var">
<prompt>choose</prompt>

<!-- ABNF -->
<grammar> one | two | three| four </grammar>

<filled>
you chose <value expr="var"/> 
</filled>

</field>


</form>
</vxml>

thanks

Solution

Your VXML grammar format may not be compatible with your platform. Try this instead:

<grammar root="main" version="1.0" xml:lang="en">

  <rule id="main" scope="public">
    <one-of>
      <item>one</item>
      <item>two</item>
      <item>three</item>
      <item>four</item>
    </one-of>
  </rule>

</grammar>

instead of...

<grammar> one | two | three| four </grammar>