I have created CustomWebControl using html,css and javascript. In the web browser aplication runs great, but when i try to connect with WinCC V8 the graphic runtime shows blank screen:

I followed the rules for creating the manifest file, added theWebCC.start function to my.js file, and included webcc.min.js in my HTML. It seems that the problem is in the contract properties because when I delete the properties, the screen is displayed as expected, but when I add the properties, the screen goes blank.

I am sending my CustomWebControl in a .zip file.

Can you please help me find the problem?