I am using kendo grid and have put template column containing checkbox in it.This template column has checkbox in header which is used to select all checkboxes of the column.When I first time check the header check box it checks all the check boxes in column but after and also unchecks the check boxes first time.But when I select header check box second time,It does not select checkboxes in the column.When I show the property of column checkbox in firebug it shows checked property to true but visibaly it is uncheckedCan you please let me knkow what is the reason for it?