I have read through many of the previous posts about custom properties but can't seem to find one that deals with my issue. I have a custom control that has custom properties. I understand how to get and set properties, but one of my properties needs to be set to either "in" or "mm". I want to property to display a drop-down menu when selected so the developer can select either "in" or "mm". Can someone offer any guidance? I appreciate all responses.