Need help about CommandBars (adding menu items to Main Menu) VB.NET

I'm porting my utilities (made with VB.NET) to CorelDRAW X7,after several days trying out to use the new additions to CommandBars and CommandBar classes I can't find the right sintaxis. In previous version of the Object Model I could add a new menu item with this instruction:

But for CorelDRAW X7, after hours and hours playing around, I can't figure out how it works and it's not convenient to me the use of xslt.

A little bit of light would be welcome.
Jaime Sanllehy