fix for octave

Author: AndreyAPopov

toolbox/+otp/+cr3bp/CR3BPProblem.m

@@ -119,7 +119,7 @@ function onSettingsChanged(obj)
             fig = internalPlotPhaseSpace@otp.Problem(obj, t, y, ...
                 'Vars', 1:3, varargin{:});
             hold on;
-            scatter3(fig.Children(1), [mu, 1 - mu], [0, 0], [0, 0]);
+            scatter3([mu, 1 - mu], [0, 0], [0, 0]);
         end
 
     end