Actually if I click on the comboboxes' down arrow which displays the list and I leave the mouse over the control but not the drop down list it will let the mousewheel move the selected item through the list. The item highlited is the value displayed in the combo box...if I then move the mouse off the control into the drop down list and right click on any value other that the one currently highlited ...(note you must choose one currently in list...you cant scroll) the display value does not change and the value has changed... if i save at this point the value saved does not equal the display value in the combobox....when I right click in the drop down list it appears as if neither the right click method or interactive change fire....I am guessing because the mouse is no longer over the control itself...but a left click in the drop down list does in fact work properly. I can solve this in a couple of lines of code but is it a BUG?