UI Editor Widget as custom editor in grid not save data to the server

[Swas]

Hello!

I added a custom editor to a row of the grid, using the "editor widget" but, when I edit the cell and save the changes I get the following error:

Uncaught TypeError: Cannot read property 'field' of undefined   


and no data is send to de server. 


Am I doing something wrong?


I attached the following URL to represent the problem:
http://jsfiddle.net/M6VmL/1/ 



Thanks
Greetings