MATLAB: How to refresh annotation after each frame

annotation;MATLAB

I am trying to insert an output in an annotation outside of my plot. The value just keeps stacking on top of each other until it is unreadable. When I use the delete(findall(gcf,'Tag','stream') function it will delete the annotation and not refresh it like I am trying to do. Any suggestions?
annotation('textbox', [0 .6 .1 .2],'String','500 MHz Max Gain Slope (dB):','EdgeColor','none');
annotation('textbox', [0 .55 .1 .2],'String',Delta_band,'EdgeColor','none','Tag','stream')
delete(findall(gcf,'Tag','stream'));

Best Answer

After you're done with each frame, call
drawnow;
to force immediate refresh/repainting of the screen.
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