title: Dynamically adding value to a combobox store in extjs
body: <p>I have 2 combo boxes and on selecting value from 1st combobox it should get added to the second combobox. For this ,I get the instance of  model of combo box 1 and set the selected value in the model instance. Then I do a combobox2.getStore()  and to this store, I do a store.add(model). The issue Is the value gets added to the store of combobox 2(checked this in firebug),but not reflected when I click on combobox2 to check if the value is added.Tried to use bindStore(store),but did not work. Any help is highly appreciated.Thanks...</p>