Can com server callback event in MATLAB return C# class object?

Is it possible to return C# class object from the COM server to event callback in MATLAB?

[Michael Teo]

To illustrate in more details,

> cs = actxserver('dataserver'); % register com server

> cs.registerevent('eventcall'); % register event callback method

In eventcall.m, function eventcall(varargin), can the varargin be a C# class object?