Object Oriented Programming - How to Use Cass Instances in Simulink

I want to program a highway simulation. The vehicle class contains several member variables, a constructor and an update method.

 classdef veh_states
    properties
        ID;
        x;
        y;
        lane;
        speed;          %[m/s]
        acceleration;   %[m/s^2]
        heading;        %[rad]
    end
    methods
        function veh_new = veh_states(n)
            %generate n random vehicles and store in array veh_new
        end
        function update(veh_array)
            %update vehicle positions
        end
    end
 end

Then I created a global instance of the vehicle array in a script.

 global veh_array;
 veh_array = veh_states(6);

Now is it possible to call update method in a embedded Matlab function within a Simulink model and how do I realise it?