ComboBox Notinlist 2 fields

[glpkid]

OKay so i have a combobox with 2 fields, City and CityCode. (i.e. Albany, ALBA) I want to be able to type in a new citycode or city so that when it's not in the list the user can add it to the list along with the field that they're not entering which would be city or citycode. Please help! thanks

 

[RuralGuy]

Maybe this link will help: Mastering the Combo Box NotInList Event