Call Variables to another function in Octave GUI - user-interface

Question

I want to make a gui, which imports the excel data and plot three y axis and one x axis like this. But in contrast to this answer from cem, my axis didn't change when the data changed.
I'm not successful with scale the y axis because I don't know how I can call the Y data from popup callback functions. In my code I marked the problem's section as %%PROBLEM%% . Therefore if you have any tipps for that, please share me about that.
clear all
clc
pkg load io
% Create the Gui Window which will hold all controls and relevant data.
GuiWindow = figure()
% Static text element used as a title
uicontrol ("style", "text", "units", "normalized", "string", "Results of Experiments",'ForegroundColor','w','BackgroundColor',[0 0.4470 0.7410],'Fontweight','bold', "horizontalalignment", "center", "position", [0.03 0.9 0.35 0.08] );
% A button for importing (excel) data
uicontrol ("style", "pushbutton", "units", "normalized", "string", "Datei (.xlsx) mitbringen", "callback", { #pushbutton_Callback, GuiWindow }, "position", [0.03 0.8 0.35 0.08], 'tag', 'button' );
% Popupmenus for selecting appropriate X and Y axis to display in plots
uicontrol("Style","popupmenu", "units", "normalized", "string","X", "callback", { #popupmenuX_Callback, GuiWindow }, "Position",[0.7 0.04 0.2 0.05], 'tag', 'XAxisMenu' );
uicontrol("Style","popupmenu", "units", "normalized", "string","Y", "callback", { #popupmenuY_Callback, GuiWindow }, "Position",[0.03 0.5 0.2 0.05], 'tag', 'YAxisMenu' );
uicontrol("Style","popupmenu", "units", "normalized", "string","Y", "callback", { #popupmenuY_1_Callback, GuiWindow }, "Position",[0.03 0.6 0.2 0.05], 'tag', 'YAxisMenu' );
uicontrol("Style","popupmenu", "units", "normalized", "string","Y Achse", "callback", { #popupmenuY_2_Callback, GuiWindow }, "Position",[0.03 0.7 0.2 0.05], 'tag', 'YAxisMenu_2' );
%%=============================================================================
%% Functions
%%=============================================================================
function pushbutton_Callback(hObject, eventdata, GuiWindow)
% Read in data from file, graphically selected by user
fileName = uigetfile('*.xlsx');
[num,txt,raw] = xlsread(fileName);
header = raw(1,:);
Data = xlsread(fileName);
% Show fileName
button = findobj('tag', 'button');
set( button, 'string', fileName)
% Populate the menu items for the X and Y Axis from the excel header
XAxisMenu = findobj( 'tag', 'XAxisMenu' );
set( XAxisMenu, 'string', header );
YAxisMenu = findobj( 'tag', 'YAxisMenu' );
set( YAxisMenu, 'string', header );
% Populate the menu items for the X and Y Axis from the excel header
YAxisMenu_1 = findobj( 'tag', 'YAxisMenu_1' );
set( YAxisMenu_1, 'string', header );
YAxisMenu_2 = findobj( 'tag', 'YAxisMenu_2' );
set( YAxisMenu_2, 'string', header );
% Also store headers and data as GuiWindow app data, in case we need them again later.
setappdata( GuiWindow, 'header', header );
setappdata( GuiWindow, 'Data' , Data );
% Plot a preliminary plot in the plot area
XData = Data(:, 1);
YData = Data(:, 1);
Y_1Data = Data(:, 1);
Y_2Data = Data(:, 1);
% An 'axes' object for displaying plots in the Gui Window
axes ('position', [0.45 0.25 0.5 0.5], 'tag', 'plotarea','ycolor','r');
% Normalisierung for axes
yoff = YData - min(YData);
ynor = yoff / max(yoff);
y1off = Y_1Data - min(Y_1Data);
y1nor = y1off / max(y1off);
y2off = Y_2Data - min(Y_2Data);
y2nor = y2off / max(y2off);
%% Plot the data
plot(XData, ynor, 'r','tag', 'plotobject',...
XData, y1nor, 'g','tag','plotobject_1', ...
XData, y2nor, 'b','tag','plotobject_2');
grid on
%% Axis inforation
%%%%%%%%%%PROBLEM%%%%%%%
##How can I import YData, Y_1Data and Y_2Data from popupmenu Y Callbacks##
nticks = 5; #Number of ticks
yticks(linspace(0, 1, nticks));
yticklabels(arrayfun(#(a, b, c) sprintf('\\color{red}%6.2f \\color{green}%6.2f \\color{blue}%6.2f', a, b, c), ...
linspace(min(YData), max(YData), nticks), ...
linspace(min(Y_1Data), max(Y_1Data), nticks), ...
linspace(min(Y_2Data), max(Y_2Data), nticks), ...
'UniformOutput', false));
endfunction
%% 2. X Axis Information from excel data import
function popupmenuX_Callback( hObject, eventdata, GuiWindow )
Axes = findobj( 'tag', 'plotarea','-or','tag','plotobject_1' );
Selection = get( hObject, 'value' );
XData = [ getappdata( GuiWindow, 'Data' )( :, Selection ) ];
PlotObj = findobj( 'tag', 'plotobject','-or','tag','plotobject_1','-or','tag','plotobject_2');
set( PlotObj, 'xdata', XData )
endfunction
%% 3. Y Axis Information from excel data import
function popupmenuY_Callback( hObject, eventdata, GuiWindow )
Axes = findobj( 'tag', 'plotarea' );
Selection = get( hObject, 'value' );
YData = [ getappdata( GuiWindow, 'Data' )( :, Selection ) ];
PlotObj = findobj( 'tag', 'plotobject' );
set( PlotObj, 'ydata', YData )
endfunction
function popupmenuY_1_Callback( hObject, eventdata, GuiWindow )
Axes = findobj( 'tag', 'plotarea' );
Selection = get( hObject, 'value' );
Y_1Data = [ getappdata( GuiWindow, 'Data' )( :, Selection ) ];
PlotObj = findobj( 'tag', 'plotobject_1' );
set( PlotObj, 'ydata', Y_1Data )
endfunction
function popupmenuY_2_Callback( hObject, eventdata, GuiWindow )
Axes = findobj( 'tag', 'plotarea' );
Selection = get( hObject, 'value' );
Y_2Data = [ getappdata( GuiWindow, 'Data' )( :, Selection ) ];
PlotObj = findobj( 'tag', 'plotobject_2' );
set( PlotObj, 'ydata', Y_2Data )
endfunction