Position group docked figures proportional to screen size (javaframe)

Hi! I docked 7 figures within a group (javaframe?). I can't define a position for the whole group. Could you help me? I followed this suggestions by Jan to create the group:

Grouping Figures separately into windows and tabs - MATLAB Answers - MATLAB Central (mathworks.com)

I read few articles on https://undocumentedmatlab.com/ but I could not solve it for now.

My code is something like this:

close all
clear all

f1=figure('WindowStyle', 'normal', 'Name', '1', 'NumberTitle', 'off');  
f2=figure('WindowStyle', 'normal', 'Name', '2', 'NumberTitle', 'off');  
f3=figure('WindowStyle', 'normal', 'Name', '3', 'NumberTitle', 'off');  
f4=figure('WindowStyle', 'normal', 'Name', '4', 'NumberTitle', 'off');  
f5=figure('WindowStyle', 'normal', 'Name', '5', 'NumberTitle', 'off');  
f6=figure('WindowStyle', 'normal', 'Name', '6', 'NumberTitle', 'off');  
f7=figure('WindowStyle', 'normal', 'Name', '7', 'NumberTitle', 'off');  

figH  = gobjects(1, 7); 

figH(1, 1)=f1; 
figH(1, 2)=f2;
figH(1, 3)=f3;
figH(1, 4)=f4;
figH(1, 5)=f5;
figH(1, 6)=f6;
figH(1, 7)=f7;
 
name_files={'1','2','3','4','5','6','7'};

desktop = com.mathworks.mde.desk.MLDesktop.getInstance;
pixels=get(0,'screensize');
myGroup = desktop.addGroup('myGroup');
desktop.setGroupDocked('myGroup', 0);
myDim   = java.awt.Dimension(4, 2);   

desktop.setDocumentArrangement('myGroup', 2, myDim)
bakWarn = warning('off','MATLAB:HandleGraphics:ObsoletedProperty:JavaFrame');
for iFig = 1:7
       figH(1, iFig).Position=[0 0 800 300]; %desired position
       figH(1, iFig).WindowStyle='docked';
       drawnow;
       pause(0.05); 
       set(get(handle(figH(iFig)), 'javaframe'), 'GroupName', 'myGroup');
end
desktop.setDocumentArrangement('myGroup', 1, myDim)

[Veronica Taurino]

I tried the following code to resize it and it works! However I have trouble because I need its size to be proportional to the screen but i get different screen sizes and I don't get the difference among the several outcomes:

ances=desktop.getGroupContainer('myGroup').getTopLevelAncestor

% desktop size
desktopMainFrame = desktop.getMainFrame;
desktopDims = desktopMainFrame.getSize

desktopW = desktopDims.getWidth
desktopH = desktopDims.getHeight
desktopW =
        2902
desktopH =
        1582
% define position and size
ances.setSize(0.22*desktopDims.getWidth,0.72*desktopDims.getHeight)
ances.setLocation(0.03*desktopDims.getWidth,0.13*desktopDims.getHeight)

But I don't get the reason I had different result with this and:

Pix_SS = get(0,'screensize')
Pix_SS =
           1           1        1920        1080

Or:

ScreenPixelsPerInch = java.awt.Toolkit.getDefaultToolkit().getScreenResolution()
ScreenDevices = java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment().getScreenDevices();
MainScreen = java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getScreen()+1;
MainBounds = ScreenDevices(MainScreen).getDefaultConfiguration().getBounds();
MonitorPositions = zeros(numel(ScreenDevices),4);
for n = 1:numel(ScreenDevices)
    Bounds = ScreenDevices(n).getDefaultConfiguration().getBounds();
    MonitorPositions(n,:) = [Bounds.getLocation().getX() + 1,-Bounds.getLocation().getY() + 1 - Bounds.getHeight() + MainBounds.getHeight(),Bounds.getWidth(),Bounds.getHeight()];
end
MonitorPositions
MonitorPositions =
           1           1        2880        1620

[Veronica Taurino]

.... ok

How to get real screen size? - MATLAB Answers - MATLAB Central (mathworks.com)

Display Scaling in Windows 10 | Microsoft Docs

[Mario Malic]

See figure properties: Position and Units. If you set Units to normalized, you don't need to work with resolution.