Setting sound configuration for Socket device

Using the following code to attempt setting the sound on/off for a Socket 8ci...not quite working for me. Can you suggest a proper command? As you can see in the code I set the Sound frequency based on a preference boolean. Thanks!

DeviceInfo device = (DeviceInfo) _scanApiHelper.getDevicesList().lastElement();
short[] soundConfig = new short[3];
// default the sound to On
if(getBRSharedPreferenceBoolean(PreferencesActivity.PREF_SOCKET_SCANNER_BEEP, true)) {
    soundConfig[0] = ISktScanProperty.values.soundFrequency.kSktScanSoundFrequencyHigh;
} else {
    soundConfig[0] = ISktScanProperty.values.soundFrequency.kSktScanSoundFrequencyNone;
}
soundConfig[1] = 200;
soundConfig[2] = 100;

// set the scanner sound config
_scanApiHelper.postSetSoundConfigDevice(
        device,
        ISktScanProperty.values.soundActionType.kSktScanSoundActionTypeGoodScan,
        soundConfig,
        _onSetScanApiConfiguration);