Chage selectable property on grid

[KendoUser]

Initially I have the selectable property on my grid set to multiple. But when a user double clicks a particular cell in that grid , I want to set this property to "cell" . Is there a way to do this?

Thanks.

[KendoUser]

I can set the selectable value for the grid using:

var grid = $grid.data("kendoGrid");
grid.options.selectable = "cell";  
grid.refresh();

But even after doing a refresh , the changes are not reflected in the grid. Is there something else I need to do for the changes to take effect?

Thanks.