MATLAB: How to delet a point in Uiaxes thats Handlevisibility is set to ‘off”

app designerhandlevisibilitylegendMATLAB

I designed an App with the App designer with several UIAxes.
When the user selects one or more samples, they are plotted and displayed in a legend.
Now I would like to show the maximum values. If I put crosses on the maximums, I don't want them to appear in the legend.
Therefor I set the HandleVisibility on 'off'.
My problem now is that when I select other samples and the graph is replotted, the old crosses at the positions of the previously selected samples are still visible.
How can I change this?
cla() and setting the HandleVisibility to 'on' is'nt working.

Best Answer

Control what appears in the legend without setting HandleVisibility to off.
Use object handles to specify what belongs in the legend or turn the the legend's AutoUpdate property off to prevent additional objects from appearing within the legend.
Both methods are demonstrated in my answer in another question.