How do i refer to the name of the ship which the player selected?

local P = script.Parent
local player = P.Parent.Parent
local index = 1
local Sdat = script.Parent.Parent.Parent.ShipData

local vehicles = {
    {
        "Cruiser",
        1378561713
    },
    {
        "Piercer",
        236481762
    },

}
wait(0.5)
local bg = P.BG

function SetInformation(index)
    bg.I.Image = "http://www.roblox.com/thumbs/asset.ashx?assetId="..vehicles[index][2].."&x=420&y=420"
    bg.T.Text = vehicles[index][1]
end

local locked = false
bg.S.MouseButton1Click:connect(function()
    if (locked) then return end
    locked = true
    local vehicleName = player.Name.."Ship"
    if (not workspace:FindFirstChild(vehicleName)) then
        if Sdat:FindFirstChild(vehicles[index][1]) == true then
        local model = game.ServerStorage.Vehicles:FindFirstChild(vehicles[index][1]):Clone()
        model.Name = vehicleName
        model.Parent = game.Workspace
        model:MakeJoints()
        model:MoveTo(player.Character.HumanoidRootPart.Position + Vector3.new(20, 0, 0))
        bg.Visible = false
    else
        bg.S.Text = "You can only have one ship at a time."
        wait(1)
        bg.S.Text = "Spawn"
    end    
    locked = false
    else print "Player does not own selected ship."
end)

bg.B.MouseButton1Click:connect(function()
    index = index - 1
    if (index < 1) then index = #vehicles end
    SetInformation(index)
end)

bg.N.MouseButton1Click:connect(function()
    index = index + 1
    if (index > #vehicles) then index = 1 end
    SetInformation(index)
end)

SetInformation(index)

the problem in this script is that

if a bool value is true then it copies the model

if its false then it prints

the name of the boolvalue is the name of the ship which the player selected

however this doesnt work for me

(For context Sdat is a folder in the player which contains boolvalues in which the names are of the ships. If the boolvalue of the ship == true it spawns that particular ship)