Is there a way to select notes from a drop down?

I have a predefined set of notes that I need to be able to chose from.  I have tried using a value list but I cant get it to show a drop down.

The same value list will show as a drop down if I use the resources column. 

Code and screen shot:

            this.ultraGanttView1.GridSettings.ColumnSettings[TaskField.Resources].Text = "(Resources)"; 

            this.ultraGanttView1.GridSettings.ColumnSettings[TaskField.Resources].ValueList= NoteList();

            this.ultraGanttView1.GridSettings.ColumnSettings[TaskField.Notes].Text = "(Notes)";

            this.ultraGanttView1.GridSettings.ColumnSettings[TaskField.Notes].ValueList = NoteList();