keyDown event won't fire

[forwheeler]

I am trying to  create an event for the keyDown so I can add a new row to the grid. I know I can so this for pqgridcelleditkeydown in edit mode but I don't  want the user to have to double click on the last row cell to get to edit mode and then arrow down to add a new row. I want them to just arrow down on the last row.
I can't get it to fire for either type spelling pqgridkeydown or pqgrikeydown.

[forwheeler]

To make the cellKeyDown event fire, I needed to set this property.
            selectionModel:{type:'cell', mode:'block'},

[paramvir]

selectionModel: {type: 'cell' } is required for cellKeyDown

mode can be 'single', 'range' or 'block'