App Designer - How to change a property from outside the app

Hello all,

I have an app reading an excel file in the StartUp function. In order to read the file the app need a file paths which will need to be modified depending on where is placed the file.

Is there a way to modify from outside the app a property (for now i declare the path as a property) ?

Or do you know how to store it in an accessible file for the user? Or a way to ask the user without causing any perturbation to the app?

Thank you in advance

[Adam]

Assuming the app is still open just access the property as normal, e.g.

myApp = App( ); % Launch the app, replacing App with your app name
myApp.someProperty = ... % Access the property and edit it