Error using .dylib from visual studio - System.Ent​ryPointNot​FoundExcep​tion

Hi, I have followed the example 'Generating C Code from MATLAB for Use with Java and .NET Applications' shown at:

https://www.mathworks.com/company/newsletters/articles/generating-c-code-from-matlab-for-use-with-java-and-net-applications.html

I am attempting (just to get started) to integrate the .dylib with a c# .net core console project (using visual studio for mac 2017)

I have added an appropriate DYLD_LIBRARY_PATH so the runtimes can be seen, then after including the following code taken from the example, I get a System.EntryPointNotFoundException for the MATLAB_CODER_DLL

using System;
using System.Runtime.InteropServices;
class Program
{
  [DllImport("MATLAB_CODER_DLL",
           CallingConvention = CallingConvention.Cdecl)]
  public static extern void kalmanfilter(Double[] a, Double[] b);

    static void Main(string[] args)
    {
        Double[] ak = { 1, 2 };
        Double[] bk = new Double[2];
        kalmanfilter(ak, bk);
    }
}

Any ideas at this stage would really be appreciated.