Combo Box Display Property

I have a combo box (control toolbox) that references a range. I have the properties set to only show 2 of the 4 columns and the bound property set to the data I need to pull. When I use the drop down I see the data I want, but when I select an employee only thier emp id remains displayed. What property do I need to change to retain the data displayed in the list.

Attached is a sample version with same set properties