If you are working with the Kendo MultiColumnComboBox you might observe that even if try to reset the selected value you can n't do that.
Even if you try to set value to blank that will not be updated. The way to achieve this is shown as below.
var ddlOptions = $("#ddlOptions").data("kendoMultiColumnComboBox");
ddlOptions.value("");
ddlOptions.trigger("change");
Cheers
Samitha
