Node.js on IIS

First ,Node.js is completely new to me.
But I installed Node, IISNode and URLRewrite on IIS, and the example that came with iisNode works well.
But my Wappler testsite does not start,

Seems like Wappler app wont start because it tries to listen to the port set in config.js and it can not start when it tries to listen to the same port as the iis Website.

In the example site that came with iisNode the node server i think the listen port is set another way with “process.env.PORT”

This is the Hello.JS that came with iisNode example app

var http = require(‘http’);
http.createServer(function (req, res) {
res.writeHead(200, {‘Content-Type’: ‘text/html’});
res.end('Hello from urlrewrite sample. Request path: ’ + req.url);
}).listen(process.env.PORT);

does anyone have some direction that I can try. I have tried to start the Node server via reverse proxy. But no real luck.
My Web.config file is attached
Regards Olavweb.config.zip (387 Bytes)