How to make a regen script only when touches?

I made a script with 3 things but the model regen part doesn't work? Whats wrong with the regen part? Everything work fine only that not. Someone know how to fix this problem? Thanks ;)

BTW: Its not working anymore the other parts bc the regen is broken but without the regen everyting works fine.

[ Warning don't test the script without changes! Error: Roblox crashes when you touch the brick! ]

Step 1: Making a clone

if (object ~= nil) and (object ~= game.Workspace) then -- Regen model part (Not working)
    model = object
    backup = model:clone()
end

Step 2: Remove when player touched

while true do -- remove model (Not working)
model:remove()
end

Step 3: Replace back after removed and regens

if (object ~= nil) and (object ~= game.Workspace) then -- place model back (not working)
    model = backup:clone() 
    model.Parent = game.Workspace 
    model:makeJoints()
end 

Full script;

debounce = false -- For respawn when player touches (Player respawn)
object = script.Parent --For regen when player touches
local ting = 0 -- touching

if (object ~= nil) and (object ~= game.Workspace) then -- Regen model part (Not working)
    model = object
    backup = model:clone()
end

function onTouched(hit)
    if ting == 0 then
    ting = 1
    check = hit.Parent:FindFirstChild("Humanoid")

    if check ~= nil then

        local user = game.Players:GetPlayerFromCharacter(hit.Parent) -- for player find
        local stats = user:findFirstChild("leaderstats") -- for the score

        while true do -- remove model (Not working)
        model:remove()
        end

        if hit.Parent:findFirstChild("Humanoid") and debounce == false then --Respawn player part (works)
            debounce = true
            game.Players:GetPlayerFromCharacter(hit.Parent):LoadCharacter()
        end
        debounce = false
        wait (0.5)

        if stats ~= nil then --Score reset (Works)
            local cash = stats:findFirstChild("Score")
                if cash.Value >= 0 then
                cash.Value = cash.Value == 0
                end
        end
    end
    ting = 0
    end
end

if (object ~= nil) and (object ~= game.Workspace) then -- place model back (not working)
    model = backup:clone() 
    model.Parent = game.Workspace 
    model:makeJoints()
end 

script.Parent.Touched:connect(onTouched)