Save changes to class properties with dot notation

Let's say I have a simple class like this one:

classdef MyData
   properties
      Data = 0;
   end
   methods
      function obj=addData(obj,val)
         obj.Data = obj.Data + val;
         disp(obj.Data)
      end
   end
end

If I call twice

a=addData(a,1);

the output is

>> a=addData(a,1);
     1
>> a=addData(a,1);
     2

however if I use the dot notation the behavior changes like this

>> a.addData(1)
     1
>> a.addData(1)
     1

The "Data" properties is not updated after the call. Is it possible to use the dot notation and store the value in the object?

Thank you very much

Answer 1

[per isakson]

MyData is a value class. Try

a = a.addData(1)

and

classdef MyData < handle

and see Comparison of Handle and Value Classes

[Luca Amerio]

The "< handle" solution is the one I was looking for. Thank you very much