Accessing Shared Data from Two Apps

Do you know how do to share Core Data with two Apps (whose you're owner) allowing read and write to the same .sqlite ?

I have tried to use App Groups :

1) Bank.xcdatamodeld BankInfo.swift BankDetails.swift

I have copied those files into the directory for this app B's project (retrieve from the app A's project ) and then I have dragged them into Xcode.

2) I have retrieved the sqlite file from the common sandbox of the app groups

App Delegate : Core Data stack [Swift]

lazy var applicationDocumentsDirectory: NSURL = {

    let urls = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
    return urls[urls.count-1] as NSURL
    }()

lazy var managedObjectModel: NSManagedObjectModel = {

    let modelURL = NSBundle.mainBundle().URLForResource("shareapps", withExtension: "momd")!
    return NSManagedObjectModel(contentsOfURL: modelURL)!
    }()

lazy var persistentStoreCoordinator: NSPersistentStoreCoordinator? = {


    // Create the coordinator and store

    var coordinator: NSPersistentStoreCoordinator? = NSPersistentStoreCoordinator(managedObjectModel: self.managedObjectModel)

    let directory = NSFileManager.defaultManager().containerURLForSecurityApplicationGroupIdentifier("com.sd.shareapps");

    let url = directory?.URLByAppendingPathComponent("shareapps.sqlite")

    //Sarting frehs every time
    NSFileManager.defaultManager().removeItemAtURL(url!, error: nil)

    var error: NSError? = nil
    var failureReason = "There was an error creating or loading the application's saved data."

    if coordinator!.addPersistentStoreWithType(NSSQLiteStoreType, configuration: nil, URL: url, options: nil, error: &error) == nil {
        coordinator = nil
        // Report any error we got.
        let dict = NSMutableDictionary()
        dict[NSLocalizedDescriptionKey] = "Failed to initialize the application's saved data"
        dict[NSLocalizedFailureReasonErrorKey] = failureReason
        dict[NSUnderlyingErrorKey] = error
        error = NSError(domain: "YOUR_ERROR_DOMAIN", code: 9999, userInfo: dict)
        // Replace this with code to handle the error appropriately.
        // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
        NSLog("Unresolved error \(error), \(error!.userInfo)")
        abort()
    }
    println("\(coordinator?.persistentStores)")
    return coordinator
    }()

I have got this error message :

"*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+entityForName: nil is not a legal NSPersistentStoreCoordinator for searching for entity name 'Entity'"

Regards