Grid - how to create column with chekboxes

I’m trying to add a column with checkboxes to my grid (to allow the user to select multiple rows) but checkboxes don’t show. Here is what I tried :
And I’m using to load the dataset.
Thanks in advance for your help :slight_smile:

I found the answer : i just missed adding :
'type': 'boolean'
instead of
editable: true
in the grid settings !