Creating an array of dictionaries plist - iphone

Question

I am creating a plist of dictionaries. The plist starts off as empty, and then I do this:
NSMutableArray *favouritesList = [[NSMutableArray alloc] initWithContentsOfFile:path];
[favouritesList addObject:thisPlace]; // where thisPlace is some NSDictionary
[favouritesList writeToFile:path atomically:YES];
When I immediately do:
NSArray *savedFav = [[NSArray alloc] initWithContentsOfFile:path];
NSLog(#"%#", savedFav);
I get an empty array. Why is this? Why isn't it writing properly? I am setting up the plist correctly, I debugged that. But I cannot add a dictionary to it.
The plist is just an empty plist with a root that's an array
EDIT:
Here is how I construct my path:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:#"favourites.plist"];
NSFileManager *fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:path]) {
NSString *sourcePath = [[NSBundle mainBundle] pathForResource:#"favourites" ofType:#"plist"];
[fileManager copyItemAtPath:sourcePath toPath:path error:nil];
}

Answer 1

I do something like below. I add an object using a key. Maybe that's why it's not working.
static NSMutableDictionary *dictionaryStore;
+(void)initialize{
if(dictionaryStore == nil){
dictionaryStore = [[NSMutableDictionary alloc] initWithContentsOfFile:[self getFilePath]];
if(dictionaryStore == nil)
dictionaryStore = [NSMutableDictionary new];
}
}
+(NSString *)getFilePath{
NSString *rootPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *plistPath = [rootPath stringByAppendingPathComponent:#"filename.plist"];
return plistPath;
}
+(NSString *)getValueForKey:(NSString *)key{
[self initialize];
return [dictionaryStore objectForKey:key];
}
+(void)setValue:(NSString *)value forKey:(NSString *)key{
[self initialize];
[dictionaryStore setValue:value forKey:key];
}
+(BOOL)save{
[self initialize];
return [dictionaryStore writeToFile:[self getFilePath] atomically:YES];
}
Edit:
So to save a value, I do:
[WAStore setValue:myValue forKey:myKey];
BOOL isSuccessful = [WAStore save];
WAStore is the class name. myValue can be most data types (NSManagedObjectModels won't work). myKey is any NSString.