<var>

Declares a variable.

Note: All variables (even those used in scripts) must be declared.

Attributes

This section describes the attributes you can set for this element.

Name	Data type	Default
expr	CDATA	optional
name	NMTOKEN	required

expr

The expr attribute is included in a declaration to assign an initial value, for example:

<var name="count" expr="0" />

Note: If the expr attribute is not specified when a variable is declared, the variable is set to undefined upon initialization.

name

The name attribute specifies the name of a variable, for example:

<var name="sizes" />

Note: In VoiceXML, certain key words are reserved for use by the interpreter. As a result, you cannot use the following key words for variable names: anonymous, application, dialog, document and session.

Children

None.

Parents

• <block>
• <catch>
• <error>
• <filled>
• <foreach>
• <form>
• <help>
• <if>
• <noinput>
• <nomatch>
• <vxml>

Sample code

<form>

    <var name="mydur" expr="0"/>

    <transfer name="mycall" dest="phone://18005551234"

        connecttimeout="30s" bridge="true">

        <filled>

            <assign name="mydur" expr="mycall$.duration"/>

            <if cond="mycall == 'busy'">

                <prompt> Sorry, our lines are busy. Please try

                    again later.</prompt>

            <elseif cond="mycall == 'noanswer'"/>

                <prompt> Sorry, our business hours are 9 am to 7 pm,

                    monday through friday</prompt>

            </if>

        </filled>

    </transfer>

</form>

For a VoiceXML sample demonstrating the use of the <var> element, see Blackjack.vxml located in $NVP_HOME/appservice/applications/webapps/BlackJack .