MATLAB: Problem with GUI for import .txt file

guiguideMATLAB

Hellow,
I'm trying to use the explanation of the following link to link through csv, matlab and metatrader. https://www.mql5.com/es/articles/1489
I made the first steps, but when entering the code:
% --- Executes on button press in pushBrowse.
function pushBrowse_Callback(hObject, eventdata, handles)
[fileName, filePath] = uigetfile('*.txt'); % receive and the path from the user
if fileName==0          % if it is canceled
      fileName='';        % create an empty name
      filePath='';        % create an empty path
end
fullname = [filePath fileName] % form a new name
set(handles.editPath,'String', fullname); % write in the editPath

It gives me the following error:
fullname =
H:\FXPRO4\MQL4\Files\EURUSD.txt
Attempt to reference field of non-structure array.
Error in FromfTo>pushBrowse_Callback (line 107)
set(handles.editPath,'String', fullname); % write in the editPath
Error in gui_mainfcn (line 96)
        feval(varargin{:});
Error in FromfTo (line 42)
    gui_mainfcn(gui_State, varargin{:});
Error in
@(hObject,eventdata)FromfTo('pushBrowse_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating uicontrol Callback
Therefore, the first step towards choosing the file path is blocked by pressing the Browse button
Anyone know what's wrong?
Thank you very much

Best Answer

In step 3 of that document it says to use the visual properties builder to create several objects, including:
Axes: Box – on, FontName – MS Sans Serif, FontSize – 8, Tag - axesChart.
You either did not do that or else you did not set the Tag to be exactly 'axesChart'
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