Insert Iframe on erpnext from searates to calculate load calculator

Hi we want to to embed our erpnext web with an iframe from searates to do a load calculator. Is there any way to embed the iframe on a new custom page?

I have manage to add a new page and add insert the iframe to the .js file but now the page become blank… can someone point out what i do wrong?

This the the code in the JS file

frappe.pages[‘load-calculator’].on_page_load = function(wrapper) {
var page = frappe.ui.make_app_page({
parent: wrapper,
title: ‘Load calculator’,
single_column: true,
“iframe id=“iframe-tracking” src=“” width=“100%” height=“1400” frameborder=“0” align=“middle” scrolling=“No”></iframe”