Table data is not editable at this location, why won't this checkbox let me check it?

f = figure;
 columnname = {'X' , 'Y'};
 Selection = {'A','B','C','D','E'}
[vals{1:numel(Selection),1}]=deal(false)
    columnform = {'logical','logical'};
t = uitable('Data',vals,'ColumnName', columnname, 'ColumnFormat', columnform,'ColumnEdit',[true true true], 'RowName', Selection);

If you run this script it should spit out a figure. but i can only select the checkboxes in the X column. Why is that?