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  1. Greetings to all in the forum. I'm totally new to AppML which by the way i found very interesting. Followed the tutorial of https://www.w3schools.com/appml/appml_client.asp till the end of it https://www.w3schools.com/appml/appml_database.asp and trying to build the web application by using WebSQL. In the table customers i can delete an existing record and modified it, but i can't add a new one. Every time when i go to New button and adding new customer data, when i press Save button i got an error in Chrome console Uncaught TypeError: Cannot read property 'CustomerID' of undefined at AppML.putRecord (appml.js:527) at AppML.saveRecord (appml.js:593) at HTMLButtonElement.onclick (app2.html:1) Specifically got error in line 527 of appml.js { if (action === "UPDATE") { if (this.data.records[0][this.data.keyField] === "") {action = "ADD"; } } And in line 593 of appml.js this.saveRecord = function () { this.putRecord("UPDATE"); }; My HTML Prototype is the follow <!DOCTYPE html> <html lang="en-US"> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> <title>Untitled 1</title> <title>Customers</title> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> <script src="appml.js"></script> <script src="https://www.w3schools.com/appml/2.0.3/appml_sql.js"></script> </head> <body> <div class="w3-container"> <div id="Form01" class="w3-container w3-light-grey w3-padding-large w3-margin-bottom" appml-data="local?model=model_customersform" appml-controller="myFormController" style="display:none;"> <div appml-include-html="inc_formcommands.htm"></div> <p> <label for="customername">Customer:</label> <input id="customername" class="w3-input w3-border"> </p> <p> <label for="address">Address:</label> <input id="address" class="w3-input w3-border"> </p> <p> <label for="city">City:</label> <input id="city" class="w3-input w3-border"> </p> <p> <label for="postalcode">Postal Code:</label> <input id="postalcode" class="w3-input w3-border"> </p> <p> <label for="country">Country:</label> <input id="country" class="w3-input w3-border"> </p> </div> <div appml-data="local?model=model_customerslist"> <h1>Customers</h1> <div appml-include-html="inc_listcommands.htm"></div> <div appml-include-html="inc_filter.htm"></div> <table class="w3-table-all"> <tr> <th></th> <th>Customer</th> <th>City</th> <th>Country</th> </tr> <tr appml-repeat="records"> <td style="cursor:pointer;width:34px;" onclick="appml('Form01').run({{CustomerID}})">&#9998;</td> <td>{{CustomerName}}</td> <td>{{City}}</td> <td>{{Country}}</td> </tr> </table> </div> </div> <script> function myFormController($appml) { if ($appml.message == "ready") {return -1;} if ($appml.message == "loaded") { document.getElementById("Form01").style.display=""; } } </script> </body> </html> Any help it's appreciated, i'm stuck at that point. I've tried some solutions but didn't worked. I have a feeling that something i am missing, cause i'm not an english native speaker. Any solutions? Thanks in advance.