static BOOL tweakEnBOOL;
#define SETTINGSFILENEW "com.imokhles.Prefs"
#define PREFERENCES_CHANGED_NOTIFICATION "com.imokhles.Prefs.preferences-changed"

// non ARC

static void iMoLoadPreferences() {
    CFPreferencesAppSynchronize(CFSTR(SETTINGSFILENEW));
    tweakEnBOOL = !CFPreferencesCopyAppValue(CFSTR("Enabled"), CFSTR(SETTINGSFILENEW)) ? YES : [(id)CFBridgingRelease(CFPreferencesCopyAppValue(CFSTR("Enabled"), CFSTR(SETTINGSFILENEW))) boolValue];
}

// with ARC

static void iMoLoadPreferences() {
CFPreferencesAppSynchronize(CFSTR(SETTINGSFILENEW));
    tweakEnBOOL = !CFPreferencesCopyAppValue(CFSTR("Enabled"), CFSTR(SETTINGSFILENEW)) ? YES : [(id)CFPreferencesCopyAppValue(CFSTR("Enabled"), CFSTR(SETTINGSFILENEW)) boolValue];
}

%ctor {
	CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(),
                                    NULL,
                                    (CFNotificationCallback)iMoLoadPreferences,
                                    CFSTR(PREFERENCES_CHANGED_NOTIFICATION),
                                    NULL,
                                    CFNotificationSuspensionBehaviorCoalesce);
	iMoLoadPreferences();
}

// and to check value within tweak.
// Example
%hook SBLockScreenViewController
- (void)finishUIUnlockFromSource:(int)arg1 {
  %orig();
  if (tweakEnBOOL) {
      UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Unlock" message:@"your device unlock finished ;)" delegate:nil cancelButtonTitle:@"OK :)" otherButtonTitles:nil, nil];
      [alertView show];
  }
}
%end