Correct performance knowledge guidance

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>

Copilot-Session: 667c64a8-eb36-4440-bc41-6a97d8fb5542

microsoft/knowledge/performance/addloadfields-in-report-onpredataitem.good.al

@@ -10,8 +10,19 @@ report 50220 "Perf Sample AddLoadFields Good"
 
             trigger OnPreDataItem()
             begin
-                AddLoadFields("Customer No.", "Posting Date", Amount);
+                // Dataset columns are selected by the report compiler. Source Code is
+                // extra because only trigger code reads it.
+                CustLedgerEntry.AddLoadFields("Source Code");
+            end;
+
+            trigger OnAfterGetRecord()
+            begin
+                RegisterSourceCode("Source Code");
             end;
         }
     }
+
+    local procedure RegisterSourceCode(SourceCode: Code[10])
+    begin
+    end;
 }