Copilot commented on code in PR #3303:
URL: 
https://github.com/apache/incubator-kie-tools/pull/3303#discussion_r2412921792


##########
packages/dmn-editor/src/propertiesPanel/BoxedExpressionPropertiesPanelComponents/DecisionTableOutputHeaderCell.tsx:
##########
@@ -244,8 +244,12 @@ export function DecisionTableOutputHeaderCell(props: {
               expressionPath={selectedObjectInfos?.expressionPath ?? []}
               onChange={(newExpressionLanguage) =>
                 updater((dmnObject) => {
-                  dmnObject.defaultOutputEntry ??= { "@_id": generateUuid() };
-                  dmnObject.defaultOutputEntry["@_expressionLanguage"] = 
newExpressionLanguage;
+                  if (newExpressionLanguage === "") {
+                    delete 
dmnObject.defaultOutputEntry?.["@_expressionLanguage"];

Review Comment:
   The optional chaining operator `?.` prevents the delete operation from 
working correctly. If `defaultOutputEntry` is undefined, the delete operation 
becomes a no-op, but if it exists, the property should be deleted. Use 
`dmnObject.defaultOutputEntry && delete 
dmnObject.defaultOutputEntry["@_expressionLanguage"]` instead.
   ```suggestion
                       dmnObject.defaultOutputEntry && delete 
dmnObject.defaultOutputEntry["@_expressionLanguage"];
   ```



##########
packages/dmn-editor/src/propertiesPanel/BoxedExpressionPropertiesPanelComponents/DecisionTableOutputHeaderCell.tsx:
##########
@@ -292,8 +296,12 @@ export function DecisionTableOutputHeaderCell(props: {
               expressionPath={selectedObjectInfos?.expressionPath ?? []}
               onChange={(newExpressionLanguage) =>
                 updater((dmnObject) => {
-                  dmnObject.outputValues ??= { "@_id": generateUuid(), text: { 
__$$text: "" } };
-                  dmnObject.outputValues["@_expressionLanguage"] = 
newExpressionLanguage;
+                  if (newExpressionLanguage === "") {
+                    delete dmnObject.outputValues?.["@_expressionLanguage"];

Review Comment:
   The optional chaining operator `?.` prevents the delete operation from 
working correctly. If `outputValues` is undefined, the delete operation becomes 
a no-op, but if it exists, the property should be deleted. Use 
`dmnObject.outputValues && delete 
dmnObject.outputValues["@_expressionLanguage"]` instead.
   ```suggestion
                       dmnObject.outputValues && delete 
dmnObject.outputValues["@_expressionLanguage"];
   ```



##########
packages/dmn-editor/src/propertiesPanel/BoxedExpressionPropertiesPanelComponents/DecisionTableInputHeaderCell.tsx:
##########
@@ -181,8 +185,12 @@ export function DecisionTableInputHeaderCell(props: {
               expressionPath={selectedObjectInfos?.expressionPath ?? []}
               onChange={(newExpressionLanguage) =>
                 updater((dmnObject) => {
-                  dmnObject.inputValues ??= { "@_id": generateUuid(), text: { 
__$$text: "" } };
-                  dmnObject.inputValues["@_expressionLanguage"] = 
newExpressionLanguage;
+                  if (newExpressionLanguage === "") {
+                    delete dmnObject.inputValues?.["@_expressionLanguage"];

Review Comment:
   The optional chaining operator `?.` prevents the delete operation from 
working correctly. If `inputValues` is undefined, the delete operation becomes 
a no-op, but if it exists, the property should be deleted. Use 
`dmnObject.inputValues && delete dmnObject.inputValues["@_expressionLanguage"]` 
instead.
   ```suggestion
                       dmnObject.inputValues && delete 
dmnObject.inputValues["@_expressionLanguage"];
   ```



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