how to know name of selected subsystem in model in matlab

To get the name of the selected subsystem in a Simulink model in MATLAB, you can use the getfullname function along with the gcb function.

Here's an example code snippet:

main.m
% Get the name of the currently selected subsystem
selectedSubsystem = getfullname(gcb);

% Display the name of the selected subsystem
disp(selectedSubsystem);
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The gcb function returns the handle to the currently selected block in Simulink. The getfullname function retrieves the full name of the block using its handle.

Hope this helps!