I want to update shared step in my testcase using C# program

Question

I want to update shared steps in my testcase using C# program,

I was able to get the shared steps reference with below code, but found that it is not updating the shared steps in tfs.. giving error "The ids and revisions collections must have the same length."

ITestIterationResult iterationResult = GetIterationResult(mCurrentTestCaseID, result);

                ITestCase testCase = result.GetTestCase();

                if (testCase.Actions[mCurrentSharedStep] is ISharedStepReference sharedStepReference)

                {

                    ISharedStep sharedStep = sharedStepReference.FindSharedStep();

                    TFSPluginLog.Write(LogType.Info, "UpdateSharedStepResult: " + sharedStep);

                    foreach (ITestAction action in sharedStep.Actions)

                    {

                        if (action is ITestStep subTestStep)

                        {

                            //ISharedStepResult sharedStepResult = iterationResult.CreateSharedStepResult(action.Id, subTestStep.Id);

                            ISharedStepResult sharedStepResult = iterationResult.CreateSharedStepResult(testCase.Actions[mCurrentSharedStep].Id, subTestStep.Id);

                            sharedStepResult.Comment = comments[index];