please can someone tell me what to do here what does it mean ? and does setappdata fall under a certain library i need to install for matlab plz help

[Jan]

Please do not post code as screenshots, but as text.

Answer 1

[Voss]

setappdate(0,'filename',filename);
%        ^ this should be an "a". setappdata not setappdate

[Walter Roberson]

Exactly what I indicated https://www.mathworks.com/matlabcentral/answers/1866858-how-can-i-solve-this-error-knowing-im-working-on-app-designer-and-does-the-input-setappdate-under-a#comment_2491418

[Voss]

@jana: And in the next call to setappdata, you'll get a different error because this:

setappdata(0,a',a)

should be this (I imagine):

setappdata(0,'a',a)