how to compile pretrained networks?

I have a code like this:

function results=myNet(filename)
load(filename) %loads data from mat file
load('net.mat')
X=.... %simple math to correctly format the data for the network
results=sim(net,X);
end

I'm trying to compile this. On the compiler app, I selected myNet as the main file, and added the 'net.mat' file as a necessary file. then I open the cmd window, go to the 'for test' folder, and call the function:

myNet data.mat > answer.txt

it should create the answer.txt file with my results, but it creates an empty file. when running everything inside MATLAB it works just fine. I tried 5 variations of the code (different syntaxes to apply net, different definitions of the function input, tried to save the result from the code instead of the cmd), nothing worked. Any idea what am I doing wrong?