How to use Events and Addlistener to Update Ylim

Hey, guys, I've been stuck for this issue for a really long time.

All I want to do is to create a event and listener, which allow me to update my ylim among several different functions to current one ( there is one big function set the ylim in gui, and this big function is calling several functions outside it. Those been called functions are calculated some variable based on a fixed ylim value, their ylim won't update as my big function's ylim changed)

Maybe this is a very simple one, but it took me really long to figure out.

I have also attached my "try" code, it's not completed, but I hope it can give you a rough idea about what I am trying to do.

    classdef axesChangedNotifier < handle
    events
        XLimChanged
        YLimChanged
    end
    methods (Static) 
        function createListener(~)
        h = gca;
        obj = addlistener(h,'PostSet',@updYlim);
        end
        function UpdYlim(obj) % allow user to update ylim
        end
    end

Thank you so much

[Vishwas Kumar]

Have a look at the example here: https://www.mathworks.com/help/matlab/matlab_oop/example-using-events-to-update-graphs.html#burmsmc-1

Intro to events and listeners: https://www.mathworks.com/help/matlab/matlab_oop/events-and-listeners-syntax-and-techniques.html

[Kat Lee]

Thanks for the example link, but I've found that I am still confused. Right now, I am thinking to let event's obj = main function that change ylim, and grab the axes handle, and let other function call this based on listener. But I am still stuck for how to realize it.