How to declare a global variable in Startup function of matlab app.designer

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I want to declare a global variable in matlab app designer's startup function in order to use it continuously through the app's code.
Specifically, I want to declare value1 as a global variable
I have tried that but it doesn't seems that works.
Thank you very much

Accepted Answer

Adam Danz
Adam Danz on 13 Jan 2021
Edited: Adam Danz on 14 Jan 2021
Do not use global variables, especially in AppDesigner.
Instead, declare a public or private property accessible anywhere within the app or outside of the app (for public properties).
ErikJon Pérez Mardaras
ErikJon Pérez Mardaras on 14 Jan 2021
Thanks for your reply!
What I was doing wrong was that I was putting in the button callback:
app.editnum.Value=value1; %INCORRECT
Instead of
app.editnum.Value=app.value1; %CORRECT

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