Brownian Path Simulation - Plotting more than one path

I am to create a discrete sample Brownian path. I believe I have the code complete, but if any mistakes, please do not hesitate in letting me know. I am trying to figure out how to generate 100, 1000, 10000 paths with T = 1 and n = 200. I'm not sure where exactly that goes. Thank you.

function [W] = brownianPath (T,n)

 %t = 0, T/n, 2T/n, ..., T where T = termination time & n = steps% 
 stepsize = T/n;
 t = 0:stepsize:T;

 dW = zeros(1,n);
 W = zeros(1,n);

 dW(1) = randn/sqrt(stepsize);
 W(1) = dW(1); %W(0) = 0 with probability 1%
 for m = 2:n
    dW(m) = randn/sqrt(stepsize);
    W(m) = W(m-1) + dW(m);
 end

 plot([0:stepsize:T],[0 W], 'g-');
 xlabel('t')
 ylabel('W(t)')
 end

Answer 1

[Abhishek Ballaney]

https://in.mathworks.com/help/finance/bm_constructor.html

[Natesha Alexander]

How can I adjust to simulate a scaled Brownian path sqrt(2D)*Wt?