I have a kendogrid with a custom editor on a particular cell using a kendoDropDown following this example: http://demos.kendoui.com/web/grid/editing-custom.html. What I'm looking to do is have another drop down external to the grid, and when the value of that drop down is changed it should change all the values of the column with the custom editor, and mark them as dirty (with the k-dirty span). Right now it appears to update the cells (the text changes) but it doesn't appear to be marking them as dirty. I imagine I need to do this at a datasource level? I haven't hooked up the grid with an update method to confirm if the data is in fact updated from the server side.