In A Userform Displaying Combobox Entries

I'm trying to take a list of names from a worksheet and create in a userform a combobox that lists the names.

Private Sub Combo_Box_Leadoff_Click()
Dim counter As Integer
Combo_Box_Leadoff.Clear
For counter = 3 To 16
Combo_Box_Leadoff.AddItem Worksheets(5).Cells(counter, 2).Value
Next counter

In the properties window, I set the value equal to the first name in the list. The above code yields a combobox that is blank except for the value set in the properties window. When I do not set an initial value, I get a completely blank combobox. I'm pretty new to VBA, and I've manged to figure out all of the macros I need so far, but setting up the user form has proved surprisingly difficult.