[Bugfix] fixed BB isEmpt but shoudl use notEmpty

atms-api/src/main/java/pwc/taxtech/atms/vat/service/impl/report/functions/BB.java

@@ -112,7 +112,7 @@ public class BB extends FunctionBase implements FreeRefFunction {
                 List<PeriodDataSource> dss = agent.queryManualDataSource(Long.parseLong(cellTemplateData.getCellTemplateId()),
                         formulaContext.getProjectId(), bo.getPeriod());
 
-                if (dss.isEmpty()) {
+                if (!dss.isEmpty()) {
                     cellValue = cellValue.add(dss.get(0).getAmount());
                 }
                 nullCellDto.setAmount(cellValue);