two different plot in the same 3D figure

x is normal random vector ranges from 0.05 to 1.2 and y varies from 0 to 22. I want to plot 2D PDF of x and y in the same figure. Z axis values are probability. Here is my code :

x= 0.05 + (1.2-0.05)*rand(1000,1);
[f,xi] = ksdensity(x);
y = 22*rand(1000,1);
[ff,yi] = ksdensity(y);
plot3(yi,xi,f,'b*');
hold on; 
plot3(xi,yi,ff,'ro');

Any help to solve the issue is appreciated.