Setting a value into a table w/ coroutines- Help?

I am making a script where when you touch either Lvl1Boost or Lvl2Boost you will insert the position of either one of those parts and insert them into the table.

local part = coroutine.wrap(function()
    game.Workspace:FindFirstChild("Lvl1Boost" and "Lvl2Boost")
end)

local pos
placelist = { pos }

game.Players.PlayerAdded:connect(function(player)
    part.Touched:connect(function()
        local previous = table.remove(placelist, 1)
        local pos = part.Position
        table.insert(placelist, pos)
        -- I want to make a line where when you touch the part it makes it your spawn point. Could someone help me with this, I don't know how to do it
    end)
end)