Unrecognized function or variable in app designer

Hello, so in this case, i'm trying to make an app that receive an audio file as input and then said file will be processed by DTFT to find its noise. However, when i try to read the audio using audioread, the log says that my variable (fullpathnames) is unrecognized. Any idea how or why this happens? Here's a snippet from my code in app editor:

% Callbacks that handle component events

methods (Access = private)

% Button pushed function: MasukkanFileSuaraButton

function MasukkanFileSuaraButtonPushed(app, event)

[file, folder] = uigetfile({"*.*"; "*.wav";"*.mp3";"*.ogg"}, 'File Selector');

fullpathnames = fullfile(folder, cellstr(file));

end

% Button pushed function: SuaraAsliButton

function SuaraAsliButtonPushed(app, event)

[x, Fs] = audioread(fullpathname);

sound(x, Fs)

end

end

Answer 1

[Hiro Yoshino]

methods(Access == public)

I suspect the access attribute was set wrongly.

see: https://jp.mathworks.com/help/matlab/matlab_oop/method-attributes.html

[Luqman Hadiwinata]

how do i change it? the code section is grayed out and i can't edit it