MATLAB: Callback issue with uiMenu

colormapdispdisplayerrormenubaruimenu

Having some issues with callback using uimenu, when a certain option is selected I want it to change the color map of the whole figure. Here is my code.
Function Startup 
fig = figure('Toolbar','none','MenuBar','none')
Main = uimenu(fig,'Label','File'); 
ImageSettings = uimenu(File,'Label','Jet',...
               'Callback', 'CM1');
end 
function CM1
%colormap(jet)
disp('Jet')
end
The error that occurs is
Too many input arguments.
Error while evaluating uimenu Callback
   Also I have tried to change my callback from: 'Callback', 'CM1'); to 
'Callback', @CM1);
That did not seem to work either.

Best Answer

The function CM1 requires 2 input arguments as all callbacks:
function CM1(ObjectHandle, EventData)
You do not have to use the values, but they must exist.
Another idea would be an anomyous function to crop the inputs:
'Callback', @(x,y) CM1
But this looks more confusing, in my opinion.
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