[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="GeometryScript|ListUtils", Meta=(ScriptMethod)) static void SetScalarListItem ( [FGeometryScriptScalarList](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptScalarList) & ScalarList, int Index, double NewValue, bool & bIsValidIndex )