Dependent observable property in Matlab. Does it work?

In Matlab class it seems to be syntactically correct to declare property that is Dependent (computed not stored) and Observable in the same time. Consider code

properties (Access = private)
    instanceOfAnotherClass
end
properties (SetAccess = private, Dependent, SetObservable)
    propertyTwo
end
methods
    function val = get.propertyTwo(this)
        val = this.instanceOfAnotherClass.propertyOne;   
    end
end

Does this work as expected? That is, if the property propertyOne of an object stored in instanceOfAnotherClass is changed is there property change event triggered by propertyTwo? Note that propertyOne is not Observable.

Edit: It does not work (as I expected). 'PostSet' event is not triggered. So how do I deal with this kind of situation? Is there a better solution then to create propertyTwo as a non Dependent and set it to the same value as 'propertyOne' every time 'propertyOne' changes?

Edit2: In reaction to Amro's edit of his answer I will explain situation more complex. Consider this 2 classes:

 classdef AClass < handle
     properties
         a
     end
 end
 classdef BClass < handle
     properties (Access = private)
         aClassInst
     end
     properties (Dependent, SetObservable, SetAccess = private)
         b
     end
     methods
         function this = BClass(aClass)
             this.aClassInst = aClass;
         end
         function val = get.b(this)
             val = this.aClassInst.a;
         end
     end
 end

The class that uses all this code should not get access to AClass. It interacts only with instance of BClass and wants to listen to changes of property b. however if I make property a of AClass observable that would not solve my problem, would it? The 'PostSet' events are not going to propagate to property b, are they?