Matlab--Problem with randn generation

I wrote a function and a top level script that queries and will return n random numbers that are normally distributed with mean m and standard deviation s.

Here is my function and top level script:

Function:

function[gaussian]=my_gaussian(m,s,n);

gaussian=randn(1,n.*s)+m

Top Level Script:

m=input('Enter the mean of your gaussian random numbers:');

s=input('Enter the standard deviation of your gaussian random numbers:');

n=input('Enter the number of gaussian random numbers:');

[gaussian]=my_gaussian(m,s,n);

Yet when I test the top level script with this:

m=5

s=2

n=500

this program then spits out 1000 numbers instead of 500. Why?

Thanks,

Kim