local BoardID = 'w0j1CQz2'
local ListName = 'Example List'
--[[
@param BoardID string -- The board's ID.
@param ListName string -- The name of the list.
@return string or false -- Returns list ID, or false if fails.
--]]
local ListID = ListsAPI:GetListID(BoardID, ListName)
if ListID then
print("The list's ID is "..ListID)
end