When I use the patch function Matlab crashed

I colored the two surfaces, but when I want to color the third surface (in white) Matlab crashes.

mycolor1=[1 0 0];
mycolor2=[0.4660, 0.6740, 0.1880];
mycolor3=[0.75, 0.75, 0];
  patch([t_1 t_1(end)],[ph_1 0],mycolor1,'FaceAlpha',0.3)
   patch([t_1(1) t_1 fliplr(t_2)],[ph_2(1) ph_1 fliplr(ph_2)],mycolor2,'FaceAlpha',0.3)

My problem: when I use this code to color the surface white Matlab crashes

   patch([t_2 t_2(end)],[ph_2 b],mycolor3,'FaceAlpha',0.3)

Answer 1

[Steven Lord]

Please send the crash log file to Technical Support using the telephone icon in the upper-right corner of this page so the Support staff can investigate the cause of the crash.