skip legend entries in property editor?

I have a .fig file where i'd like to delete the first 8 legend entries without effecting the other ones. Figure is attached. tried it with property editor but it doesn't work. I'm running 2017b.

Answer 1

[Bhaskar R]

ax = gca;
ax_data = ax.Children;
legend(ax_data(1:5), fliplr(ax.Legend.String(9:end)))

[Martin Muehlegger]

Ouh always forget fliplr.... But how to do this in the figure property editor?