Enhance possibilities of macro execution tied to a form element

as of now when you tie a macro to a form element the macro will be executed but it does not wait for the change in the form element itself. For instance: mycombobox is on value "value1". I tie the macro "macro1" to mycombobox. I change the value of mycombobox to "value2" If I query the value of mycombobox in "macro1" it will return "value1", not the new one. There should be 2 different events like in VBA : "Before" and "After"