You need to add an "*" in front of your field name The final syntax should be: {*fieldName}
{description} - Regular Field that supports only regular text / number
{*description} - Special field that supports HTML as input
{#*people.description} - Special field in table/section "people" that support HTML as input
Supported HTML Tags
Excel cell formatting has limited capabilities compared to HTML formatting. Please see list below for supported html to excel formatted cell elements
<b>, <strong> -> bold
<i>, <em> -> italic
<u>, <ins> -> underline
<strike>,<s>,<del> -> strikethrough
<sub> -> subscript
<span> -> text styles
<p>, <div>, <pre> -> moving to new line
<h1>...<h6> -> text-styles
<code> -> text-styles
<ul>, <ol> -> text-indentation
<table> -> table to text represantion
<a>, <img> -> text-only
<br> -> newline