How to use the old prefs method within sandbox apps

How to use the old prefs method within sandbox apps

static BOOL tweakEnabled = NO;
static void PreferencesChangedCallback(CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo) {
	system("killall WhatsApp"); // kill app to apply changes ;)
	NSDictionary *preferences = [[NSDictionary alloc] initWithContentsOfFile:@"TWEAK_PREFS_PATH"];
	tweakEnabled = [preferences[@"tweakEnabled"] boolValue];
}

 %ctor {
    
     [[NSNotificationCenter defaultCenter] addObserverForName:UIApplicationDidFinishLaunchingNotification object:nil queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *block) {
		NSDictionary *preferences = [[NSDictionary alloc] initWithContentsOfFile:@"TWEAK_PREFS_PATH"];
		if (preferences == nil) {
			preferences = @{ @"tweakEnabled" : @(NO)};
            		[preferences writeToFile:PREFERENCES_PATH atomically:YES];
            		tweakEnabled = NO;
		} else {
			tweakEnabled = [preferences[@"tweakEnabled"] boolValue];
		}
	CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, PreferencesChangedCallback, CFSTR("TWEAK_NOTIFICATION_NAME"), NULL, CFNotificationSuspensionBehaviorCoalesce);

     }];
}
// Hook WhatsApp to don't send images ;)
%hook ChatViewController
- (void)sendImage:(id)arg1 caption:(id)arg2 {
	if (tweakEnabled) {
		return
	} else {
		%orig;
	}
}
%ene