Load a variable from base workspace into a edittext field

I have a a function called DataCollector.m The function opens the file explorer using

[FileName,PathName] = uigetfile('*.lcm','Select the MATLAB code file');

Which is in the DataCollector.m file.

So i would like to take the parameter FileName and display it in a edit text field. So i have written

app.EditField.Value = FileName;

Which does not work. How do i solve this?

[Jan]

Please explain "does not work" with any details. How could the readers suggest a solution, if they do not know, what's going wrong?

[adnan Hossain]

Well the text field does not change text. I would like to display the FileName text there.

Answer 1

[adnan Hossain]

I solved it by making the variable FileName global in the .m file.

[Stephen23]

Passing arguments is much more reliable than using global variables.

https://blogs.mathworks.com/videos/2010/03/08/top-10-matlab-code-practices-that-make-me-cry

https://www.mathworks.com/matlabcentral/answers/51946-systematic-do-not-use-global-don-t-use-eval

http://matlab.wikia.com/wiki/FAQ#Are_global_variables_bad.3F

Answer 2

[Stephen23]

Define the function so that FileName is an input argument:

function DataCollector(FileName)
...
app.EditField.Value = FileName;
...
end

and then simply call it with whatever value you want:

DataCollector('MyFile')

[adnan Hossain]

Could you please elaborate this a bit more? Should i use this code in the app designer? the DataCollector('MyFile') part, where should i post this?