CheckProperty on "wText" with cmpEqual intermittently fails

I have a text field that I enter incremental numerical values in and send to the firmware after each increment.  In between increments, I do get a data from the firmware and compare the returned value to the last sent data.  However, even though the returned value is same as the last sent, aqObject.CheckProperty(Object, "wText", cmpEqual, lastdata) sometimes fails and sometimes passes.  Refer to attachment for an example.