Customized Zoom function - Getting the clicked figure Tag

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Hi all
I'm quite new to MatLab programming and have encountered a problem...
I've written a script that collects data and presents these data to a GUI which contains different presentations of the same data. The GUI contains 8 figures.
What I want to do is to use the zoom function (by clicking the zoom icon in the meny bar), select a figure, drag to select the new X- and Y-axis limits and then update ALL 8 figures in the GUI based on the new axis limits. I cannot use linkaxes due to the necessity to do a lot of recalculations based on the limit selection for each figure.
When browsing around I found how to get the selected limits according to:
% --------------------------------------------------------------------
function uitoggletool1_ClickedCallback(hObject, eventdata, handles)
% hObject handle to uitoggletool1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
disp('Zoom tool clicked');
h = zoom;
set(h,'ActionPreCallback',{@myprecallback,handles});
set(h,'ActionPostCallback',{@mypostcallback,handles});
set(h,'Enable','on');
%
function myprecallback(obj,evd, handles)
disp('A zoom is about to occur.');
%
function mypostcallback(obj,evd, handles)
NewXLim = get(evd.Axes,'XLim');
%disp('X-limits '), NewXLim
NewYLim = get(evd.Axes,'YLim');
%disp('Y-limits '), NewYLim
%Get the tag of the selected figure in the GUI
h1 = gco;
Update_All_Figures(h1, NewXLim, NewYLim, handles);
%
function Update_All_Figures(h1, xlim, ylim, handles)
disp('Entering function Update_All-Figures...')
disp('Figure tag '), h1
disp('X-limits '), xlim
disp('Y-limits '), ylim
%Find out which figure was clicked...
if h1 == handles.ScatterTag
disp('Scatter plot zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.xHistoTag
disp('X histogram was zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.yHistoTag
disp('Y histogram was zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.thetaHistoTag
disp('Theta histogram was zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.RegistrationTag
disp('Registration plot was zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.MountScanOrderTag
disp('Mount/Scan plot was zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.dXdYTag
disp('dx/dy error was zoomed...')
%Update active data and replot all figures here...
elseif h1 == handles.dfiTag
disp('dFi error was zoomed...')
%Update active data and replot all figures here...
else
disp('Figure not recognized. Try again!')
end
Note that the handles structure contains the tags to all 8 plots.
When I run the code I get different values of figure tag (h1 in the code). Sometimes the gco command returns the correct figure tag and sometimes not.
Anybody has any ideas?
TIA
Magnus
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