Key Value Dropdown

Key Value Dropdown

Would it be possible to add a key-value dropdown list to creator so that we can do things like populate it with a map that contains human readable text that's linked to an id number. e.g. being able to select the line item that a creator object belongs to for a sales order, and storing the ID number rather than the text of the line item, so that if/when the text on the line item is changed it doesn't lose the link to the creator object.