The <If/> Element

This element permits flow control based on result of an expression evaluation.

Element Attributes

Attribute Name Description Allowed Values Default Value
expr expression to be evaluated. If it evaluates to True then the child element <Then/> is executed. If it evaluates to False and a child element <Else/> is present, it will be executed instead. See expressions non-empty string none

Example 1: <If/> with <Then/> and <Else/>

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<IVR>
  <GetJSON var="data" url="https://somewhere.com/get_account?phone_number={{CallingNumber}}"/>
  <If expr="data.balance > 100">
    <Then>
      <Transfer>promotion</Transfer>
    </Then>
    <Else>
      <Speak voice="en-US-Standard-C">Sorry, you don't have enough credit in your account.</Speak>
    </Else>
  </If>
</IVR>

Example 2: No <Else/>

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<IVR>
  <GetJSON var="data" url="https://somewhere.com/get_account?phone_number={{CallingNumber}}"/>
  <If expr="data.balance > 100">
    <Then>
      <Transfer>promotion</Transfer>
    </Then>
  </If>
  <Speak voice="en-US-Standard-C">Sorry, you don't have enough credit in your account.</Speak>
</IVR>