problem in pass data to dataproccessor using custom cell

i need to have more than one checkbox a specific cell of a grid and can show this by place this code on xml

" but how can i edit and send this data to server side like a common cell?

You should try to create custom ExCell type.
Please read the following tutorial:
docs.dhtmlx.com/doku.php?id=dhtm … formatters

Also you should use native checkboxes from dhtmlxGrid.