Tune parameters after compiling Simulink-model to c code

Hi!

I am working on a project where I'm going to simulate a submarine in SimuLink. This simulator is then going to be compiled to C-code and run on another host machine (without MatLab/SimuLink). This demands that I can change alot of the parameters and variables after compiling the model, and preferably as the model is running. I've managed to get a model running and saving the output to a text file, no problem there. I can also change the parameters, but I then have to recompile the model to be able to see the results from the changes. So, is there any easy way of being able to change the parameters/variables of the model after it's compiled?

Very happy to get some help, been struggling with this for a couple of days!

/Magnus