Voicexml how to store input into a global variable - global-variables

Question

I'm creating a voicexml appliacation.
I want to store an user input into a global variable.
I wondered, the input should be stored in the fieldvar. shouldn't it? After I tried it with this, i tried to store it in an global variable:
<assign name="myvar" expr="'myinput'"/>
but somehow it didn't work. I used value expr="var" as expr.
<?xml version="1.0" encoding="UTF-8"?>
<vxml xmlns="http://www.w3.org/2001/vxml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/2001/vxml
http://www.w3.org/TR/voicexml20/vxml.xsd"
version="2.0">
<var name="myProdukt" />
<form id="test">
<field name="var">
<prompt bargein="true" bargeintype="hotword" >Sagen Sie ein Produkt</prompt>
<grammar root="main" version="1.0" xml:lang="de-DE">
<rule id="main" scope="public">
<one-of>
<item> p1 </item>
<item> p2 </item>
<item> p3 </item>
<item> p4 </item>
</one-of>
</rule>
</grammar>
<filled>
<assign name="myProdukt" expr="<value expr="var"/>"/>
</filled>
</field>
</form>
<<!--[...] Here i want to use the input.-->
</vxml>
thanks in advance
---------------EDIT:
now i used this:
<filled>
test
<assign name="myProdukt" expr="var" />
</filled>
I only changed that. The Applications says "test" but then there is an error.
It isn'T allowed to use "var" instead I used an other name :-)

Answer 1

Did you try a simple assignment of field var to the variable myProdukt like so ?
<filled>
<assign name="myProdukt" expr="var"/>
</filled>
Which would be fine except that according to Section 5.1, Variables and Expressions of the Voice XML specification:
VoiceXML variables, including form
item variables, must not contain
ECMAScript reserved words.
So, you'll need to rename the field var to something that is not a reserved word in ECMAscript, say productSelection:
<field name="productSelection">
<!-- .. prompt, grammar as before .. -->
<filled>
<assign name="myProdukt" expr="productSelection"/>
</filled>
</field>