Thymeleaf Nested Modal Variables - thymeleaf

Question

I'm using Spring Thymeleaf for templating. I want to use the nested modal varabiles, but when I use it in nested form. I'm getting the follwing error,
th:text=${${FIELD_NAME_1}}
SpelParseException: EL1041E: After parsing a valid expression, there is still more data in the expression: 'lcurly({)'
This is my template snippet,
<!--
<td th:href="#{'${URL}' + ${ID_FIELD}}"
th:text="${FIELD_NAME_1}">Tiger Nixon</td>
-->
<!-- <td th:text="${__${FIELD_NAME_1}__}">Tiger Nixon</td> -->
<td th:text="${(country.countryName != null) ? ${country.countryName} : "nullvalue" }">Tiger Nixon</td>
<td th:text="${__${FIELD_NAME_2}__}">Lorem Ipsum is simply
dummy text of the printing and type setting industry.</td>
<td>Code not added</td>
<td class="text-center"><span
class="icon-edit float-left actionCircle"
style="padding: 10px"></span>
<div class="dotMenus mt-2 float-left">
<span class="icon-Dots actionCircle"
style="padding: 10px 10px;"></span>
<div class="dotMoreMenu mt-3">
<ul>
<li><a href="#"> <span class="icon-Delete mr-2"></span>Delete
</a></li>
<li><a href="#"> <i class="fas fa-lock mr-2"></i>Option
01
</a></li>
<li><a href="#"> <i class="fas fa-lock mr-2"></i>Option
02
</a></li>
</ul>
</div>
</div></td>
<td></td>
</tr>
These are my modal Varaibles,
modalAndView.addObject("COUNTRYS_DTOS", countrysFetchByPageResponseDto.getCountrys());
modalAndView.addObject("ITEM_DTO", "country");
modalAndView.addObject("ITEM_DTOS", "COUNTRY_DTOS");
modalAndView.addObject("FIELD_NAME_1", "country.countryName");
modalAndView.addObject("FIELD_NAME_2", "country.description");
But still it is generating a blank page.