math.random() always picking the number 1?

Also, math.Random(0,4) WONT WORK

So, i am making something so this briefcase will teleport to 1 of 4 positions. The script works fine, but its always picking position one. Can someone help me?

local map = "hub"
local pick = 0
local CSPAWN = 0


pick = math.random(1)

if pick == 1 then
    map = "concept"
    print(map)
end





if map == "concept" then
    CSPAWN = math.random(4)
    if CSPAWN == 1 then
    game.Workspace.Maps.Concept["The concept suitcase!"].Handle.Position = Vector3.new(-422.5, 1.5, -98.7)
    end
    if CSPAWN == 2 then
    game.Workspace.Maps.Concept["The concept suitcase!"].Handle.Position = Vector3.new(-355.5, 1.5, -184.55)
    end
    if CSPAWN == 3 then
    game.Workspace.Maps.Concept["The concept suitcase!"].Handle.Position = Vector3.new(-239.95, 1.5, -110.95)
    end
    if CSPAWN == 4 then
    game.Workspace.Maps.Concept["The concept suitcase!"].Handle.Position = Vector3.new(-335.3, 1.5, -60.8)
    end
    print(CSPAWN)
end