why is the 'menu' isn't working,it shows up only when I stop roading when

color = menu('pick a colour','red','blue','yellow')

[Voss]

Sorry, what is "roading"?

[James]

Menu function doesn't work,it keeps on loading

[Voss]

The same thing happens to me when I run menu on MATLAB Mobile.

You can use input instead:

color = input('pick a colour (1=red, 2=blue, 3=yellow): ');

and then enter 1, 2, or 3.