Hopperbin script not working in game, works perfectly in studio. Anyone know what to do?

So this happens to some of my tools, they work perfectly in studio and don't do anything in game.

I checked the output in game via developer console and got nothing.

Here's my script:

local tool = script.Parent --The hopperbin which the script is in.
local player = game.Players.LocalPlayer --The local player. (Make sure the script is a local script)
local char = player.Character --The character of the player.
local hum = char.Humanoid

tool.Selected:connect(function(mouse) --Fires the function when the event is triggered.
        mouse.Button1Down:connect(function() --Fires the function when the event is triggered.
         if char:FindFirstChild("HumanoidRootPart") ~= nil and char.HumanoidRootPart:FindFirstChild("Fire") == nil then
            local f = Instance.new("Fire", char.HumanoidRootPart)
            f.Color = Color3.new(0.4)
            f.SecondaryColor = Color3.new(0, 0, 0)
            f.Heat = 0
            f.Size = 0
            char.Torso.Anchored = true
            while (f.Size < 9.9) do
            f.Size = f.Size + 0.2
             wait(0.1)
            end
            wait(3)
            while wait(0.1) do
            f.Size = f.Size - 0.2
            if f.Size == 2 then f:Destroy() char.Torso.Anchored = false
                end
            end 
        end
    end)
end)

Any help would be appreciated.