Issue

index.js

var express = require('express')
var morgan = require('morgan')
var MikroNode = require('mikronode-ng');
var app = express()
var connection = new MikroNode.Connection('192.168.1.99','admin','admin', {closeOnDone : true});

app.use(morgan("dev"))
app.use(express.static('static'))
app.set("view engine", "pug")

app.get("/", (req,res) => {
	res.render('index')
})

app.get('/data', (req,res) => {
	connection.getConnectPromise().then(function(conn) {
		conn.closeOnDone = true;
	    conn.getCommandPromise('/ip/firewall/address-list/print').then(function resolved(values) {
	        res.send(JSON.stringify(values));
	    }, function rejected(reason) {
	        res.send(JSON.stringify(reason));
	    });
	}, function reject(result) {
		console.log(result);
	});
})

app.post('/data', (req,res) => {
	connection.getConnectPromise().then(function (conn) {
		conn.closeOnDone = true;
		console.log(123)
		conn.getCommandPromise(['/ip/firewall/address-list/add', '=list=allowed', '=address=2.0.1.222', '=comment=Made']).then(function resolved(values) {
	        res.send(JSON.stringify(values));
	    }, function rejected(reason) {
	        res.send(JSON.stringify(reason));
	    });
	}, function reject(result) {
		console.log(result);
	})
})


var port = 3000

app.listen(port, _ => {
	console.log("Running on", port)
})