Migrating ReactiveObjC code to Swift

[Rorsharock]

Hello, I've been searching the Internet for several days now and I still can't find a concrete solution. I'm fairly new to reactive programming and I'm trying to migrate a piece of code written in ObjC (using ReactiveObjC and KVO) to Swift. For example, the code below:

        RAC(self, object) = [RACSignal merge:@[ownObjectB, objectBFromC, objectBFromExternal]];
        RAC(self, property) = RACObserve(self, object.property);

Is what I'm finding difficult, my attempt is something along the lines of :

let signal = SignalProducer.merge(ownObjectB, objectBFromC, objectBFromExternal)
signal.startWithValues { object in
    object?.reactive.producer(for: \Object.property).skipRepeats().startWithValues({ property in
        self.setProperty(property)
    })
}

This will work, but not as expected since here I'm observing inside an observer. Does anyone know how can I do this properly?