label of multiselect is not showing value from db

I’m trying to add MultiSelect control in the lightbox and managed to load the options from the DB but the label of the control is showing as “undefined”. How can i display the value from the DB as label?

Dim dc = New EventCategoryDataContext()
Dim dataset As IEnumerable(Of MMCA_Library)
dataset = From ev In dc.MMCA_Libraries
              Where ev.Type = "SEC" And ev.SubType = "QUE" Select ev

Dim accLvl = New LightboxMultiselect("Code1", "Access Level")