CoreLoot.DefaultDatabase = {
  -- things
  Blacklist = { [1234] = "Some Item" }
  -- Things
}


local _BlacklistDropdown = CoreLoot.GUI:Create("Dropdown")
      _BlacklistDropdown:SetMultiselect(true)
      _BlacklistDropdown:SetFullWidth(true)
      _BlacklistDropdown:SetLabel("Blacklisted Items")
      _BlacklistDropdown:SetList(CoreLoot.DefaultDatabase.Blacklist)
      _BlacklistDropdown:SetCallback("OnValueChanged", function(key, checked)
        CoreLoot:Print(key)
        CoreLoot:Print(checked)
      end)