Cannot display text from uitable1 to uitable 2 (column 1)

function UpdateTrain_Callback(hObject, eventdata, handles)
%% Tombol Update Train
try
    data = get(handles.uitable1,'data');
    %jenis = char(data(:,1));
    DataJ = string(data);
    [Alternatif, Kriteria] = size(data);
    dataN = zeros(1,6);
    DataTraining = str2num(get(handles.tfDataTraining,'String'));
    newAlternatif=1;
    for x = 1:DataTraining 
        for y = 1:Kriteria
            dataN(x,y) = DataJ(newAlternatif,y);
            %fprintf('\nData Testing Bulan Ke - %d Tahun Ke - %d = %10.8f', y, th2, dataN(x,y));
        end
        newAlternatif=newAlternatif+1;
    end
    disp(dataN);
    if all(cellfun(@isempty, data(:)))
        msgbox('Data Is Still Empty','Warning','warn');
    elseif isempty(DataTraining)
        msgbox('Data Training Cannot Be Empty','Information','help');
    elseif all(~cellfun(@isempty, data(:))) && ~isempty(DataTraining)
        set(handles.uitable2, 'enable','on');
        set(handles.uitable2,'data',dataN);        
        set(handles.UpdateTest, 'enable','on');
    end
catch exception
    msgbox(exception.identifier,'Error','error');
end

Someone please help me. I don't know how to fix this .... and I don't really know what matlab does.

this is the source code ....

I can't display text from uitable1 (column 1) to uitable 2 (column 1)

The explanation is in the picture!

[Mario Malic]

This happens when you try to put a character/string array into a field that accepts a numeric value. Not sure if it's possible to change UITable field with set command, but if you access it this way, it should work.

table.data = values