EL表达式 if else

<c:choose>

		 <c:when test="${empty item.numcusellrate}">   
			 <display:column  title="Rate" sortable="true" value="N/A"  ></display:column>
		 </c:when>
		 <c:otherwise>
			 <display:column property="numcusellrate" title="Rate"  sortable="true" format="{0,number,0.0000}" style="word-break:break-all;width:50px"></display:column>
		 </c:otherwise>	

</c:choose>