Watch Face Exception when changing settings via Connect on Android

Could anyone suggest how to debug this error ?

Are you the developer of the watch face, or are you a user who is not the developer?

I have a watch face that gives an error when updating the settings via the Connect IQ application on an Android device.

See https://forums.garmin.com/showthread.php?370765-Watch-face-crash-on-settings-change-made-from-android-app

I am the developer. The application works fine in the simulator across a range of devices. On android it seems to have a problem.

OK I managed to get an android device and side load the application with some debug trace in it. My application was reading an application property defined as a number and using that to index into an array. When the settings were changed via Connect IQ on android my watch application received the 'number' as a float and it caused the index into the array to give an exception.

Problem was fixed by reading into a variable and then using the .toNumber() function to make sure it was the right type. I have no idea why this error did not occur when setting were changed via Connect IQ on an iOS device.