Extensebility in NAV 2016 Latest Builds

Hi,

In the Url Below:
https://code.msdn.microsoft.com/Extensibility-for-the-7600738d#content

there is a control addin which is not working in NAV2016 Latest Builds(for example CU7) it is not showing the draw box.

Is anybody have a solution for this.

Thanks in Advance