how do i make my function accept filename as input ?

hi, i have a function that i want to accept an excel filename as an input so it can load that file, i have been unable to get it to accept that , ive tried using filename as an input

function [ theta , xLand ] = ProjectileData(fileName)
%UNTITLED8 Summary of this function goes here
%   Detailed explanation goes here
data = xlsread('fileName');
theta = data(:,1);
xLand = data(:,2:end);
aveDis = mean(xLand , 2);
if nargout == 0
    plot (theta , aveDis)
end 
end

[per isakson]

Why do you think the function does not accept the filename?

Answer 1

[Stephen23]

Change this line so it uses the variable filename instead of the string 'filename':

 data = xlsread(fileName);

[khaled almutairi]

tried it , didn't work

EDIT : never mind , it works now, thanks