how to add dynamic class name in thymeleaf in select option? - class

Question

i submit with model to template
in template
i used th:each and in th:each i used select option
i want to dynamically add select's class name
"${cos_seq}" is int so i add 'abc'
<th:each="row:${Basket}">
<select class="'abc'+'${row.cos_seq}'"
th:value="${row.cos_seq}" style="float:left;margin-
right:5px ;width:45px;height:42px;" >
<option
class="qty-option" value="1" text="1"
style="width:20px">1</option>
<option
class="qty-option" value="2" text="2"
style="width:20px">2</option>
<option
class="qty-option" value="3" text="3"
style="width:20px">3</option>
<option
class="qty-option" value="4" text="4"
style="width:20px">4</option>
<option
class="qty-option" value="5" text="5"
style="width:20px">5</option>
<option
class="qty-option" value="6" text="6"
style="width:20px">6</option>
<option
class="qty-option" value="7" text="7"
style="width:20px">7</option>
<option
class="qty-option" value="8" text="8"
style="width:20px">8</option>
<option
class="qty-option" value="9" text="9"
style="width:20px">9</option>
<option
class="qty-option" value="10+" text="10+"
style="width:20px">10+</option>
</select>