Self-Created function won't work anymore

Why won't my function work anymore after closing matlab? I had created a function, it was working fine, then I closed the program and reopened it later, tried to use the same function and got this error:

"Execution of script Fermat as a function is not supported:

D:\Documents\School Assignments\Res - Spring Semester

(2023)\MATH307\Assignments\Fermat.mlx"

It is in the directory that is set as the one I'm in, so I know that's not the issue. Just in case it's needed this is the code of my function.

"function [a,b] = Fermat(n)

%Fermat function: Performs Fermat Factorization

% This code takes the input (n) and uses it to calculate the starting

% step value for s, which is the first of the two squares subtracted to

% create the input value of n.

% It then runs the input into a loop that calculates by step s values

% until the difference between the square root of s^2-n and the integer

% value smaller than that value is zero, meaning that it is itself an

% integer.

% Once the value of s is determined it then outputs the two factors of

% n by taking s and t (the two squares) and adding and subtracting

% them.

s=ceil(sqrt(n));

i=1;

while i>0||i<0

s=s+1;

arg=sqrt(s^2-n);

i=arg-floor(arg);

end

s;

t=sqrt(s^2-n);

a=(s-t);

b=(s+t);"

Answer 1

[Cassie Thompson]

I think I figured it out, I had a live script by the same name in the same directory and I think that confused matlab when I went to call it.