public TestVariable UpdateTestVariable() { string projectName = ClientSampleHelpers.FindAnyProject(this.Context).Name; // Get a testplan client instance VssConnection connection = Context.Connection; TestPlanHttpClient testPlanClient = connection.GetClient <TestPlanHttpClient>(); //Get the test variable first TestVariable newVariable; Context.TryGetValue <TestVariable>("$newVariable", out newVariable); if (newVariable != null) { int id = newVariable.Id; TestVariable variable = testPlanClient.GetTestVariableByIdAsync(projectName, id).Result; TestVariableCreateUpdateParameters testVariableCreateUpdateParameters = new TestVariableCreateUpdateParameters() { Name = variable.Name, Description = "Updated Description", Values = variable.Values }; testVariableCreateUpdateParameters.Values.Add("New Value"); // Update Test Variable TestVariable updatedVariable = testPlanClient.UpdateTestVariableAsync(testVariableCreateUpdateParameters, projectName, variable.Id).Result; Context.Log("{0} {1}", updatedVariable.Id.ToString().PadLeft(6), updatedVariable.Name); return(variable); } return(null); }