NaN Function | Vantage CX - 1.4 - NaN - Vantage Customer Experience

Vantage Customer Experience User Guide

Product
Vantage Customer Experience
Release Number
1.4
Release Date
June 2021
Content Type
User Guide
Publication ID
B035-3800-099K
Language
English (United States)

Returns true if the attribute value that should have been a mathematical number is not a number.

The following criteria expression always returns true because an invalid average—the average of nothing—is not a number.

avg("") == NaN

Using the value function on a text string produces an error rather than NaN (not a number).