how to link app designer with simulink

Hi, All,

I have beening trying to create a user-friend GUI with app designer, which eventually runs a simulink model.

The way I did is in the app designer, include a few edit field that can allow users to input parameters.

then those parameters are saved into a .mat file. A click button act will execute a .m file, load up that .mat file and run a simulink model.

However I find that the parameter input from the .mat file is loaded corrected, but the parameters in the .m file are not loaded, and the simulink model won't run.

The .m file include the simulink model, by themselves, runs just fine.

this is weird, and if someone has seen this, please help me figure out what's the problem.

thanks