how to compiling a class with its methods as COM to use in VB?

Good morning everyone,

I am trying to compile a tool coded in MatLab. In this tool I have several classes and sub-classes with their own properties and methods.When I compile them as COM object and transfer them to a VB environment only the constructor methods is available to be used for each one of my classes. I am taking the class in the compiler and add the file containing the class and the methods, but I don't know how else should I proceed in order to have all my methods, what am I doing wrong?