[Bugfix] fixe base get value bug not return calcs value

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

@@ -200,8 +200,11 @@ public class FunctionBase {
             String evalStr = OperandResolver.coerceValueToString(eval);
             LOGGER.debug("[Formula_debug] eval other cell value {}", evalStr);
             try {
+                BigDecimal bigDecimal= new BigDecimal(evalStr);
                 if (!dss.isEmpty()) {
-                   return new BigDecimal(evalStr).add(dss.get(0).getAmount());
+                   return bigDecimal.add(dss.get(0).getAmount());
+                }else {
+                    return bigDecimal;
                 }
             } catch (Exception e) {
                 if (!dss.isEmpty())