Shigeru, are you sure there isn't any fault or conflict every two times? Are you sucessfully commiting that value to the db? I've been using addChangedPropertyName for a long time without an issue, both 2.5.1 and 2.6.
-- João Fernandes Adobe Community Expert http://www.onflexwithcf.org http://www.riapt.org Portugal Adobe User Group (http://aug.riapt.org)
