How to display description only when TV is set?

Question

MODX

Each product has two TV - "area" and "phone number" and on the page they are highlighted in text. But not every product has them.
How to make it so that if TV is not specified, then there was no text either?

Here, for example, Phone: should not be displayed.

Answer 1

Revo Methods

Answer 2

Method for EVO:

[!If? &is=`[*phone*]:!empty` &then=`Телефон: [*phone*]` &else=``!]