<?xml version="1.0" encoding="UTF-8"?><vxml version="2.0">  <form id="form2">    <!--.asp consults back-end database before filling this value-->    <assign name="timeleft" expr="600"/>      <block> Time remaining is <value expr="timeleft"/> seconds </block>    <field name="telnum" type="digits" >      <prompt> Please speak the telephone number you want to call </prompt>      <filled>        <if cond="telnum.length != 7">          <clear namelist="telnum"/>        <else/>          <exit namelist="telnum"/>        </if>      </filled>    </field>  </form></vxml>