I have a .m file , from which I would like to import 3 variables and their values (their values are not constant). How do i load it into app designer?

I am trying to create an app, in app designer. I would like to plot the value of three variables, that are calculated in different files. I tried to load() those .m files, and also tried to save them as .mat file and load them as that but did not work .

I tried to use run() but not sure if that loads the variables into the app?

I would be greateful for any help

thank you