Im having trouble loading a program to explore the output using Plot Command

We were asked to upload a code and use plot command to explore the output, but the code I uploaded is receiving errors, please help

load handel
sound (y,Fs)
 
multiplier = 0.10 ;
noise = randn(length(y),1) * multiplier ; 
 
%% Explore This
 
sound_w_noise = y + noise ; 
sound (sound_w_noise,y) ; 
 
t = 1:length(y) ; 
 
plot(sound_w_noise,1:200,t)

Error using sound (line 76)
Operands to the || and && operators must be convertible to logical scalar values.
Error in PlotCommandExploration (line 17)
sound (sound_w_noise, y) ;

This is the code I was told to upload and the errors I'm receiving. I have no idea where to start

[madhan ravi]

upload handel

Answer 1

[KALYAN ACHARJYA]

load handel
sound (y,Fs)
multiplier=0.10 ;
noise=randn(length(y),1)*multiplier ; 
%% Explore This
sound_w_noise=y+noise ; 
sound(sound_w_noise) ; 
t=1:length(y) ; 
plot(sound_w_noise,t);

[Michael Ballenger]

Thank You!! I found my error. Now how would I examine the first 200 data points only in my plot?