Why does this script work testing it in edit mode but not publish mode?

this dig tool works 100% fine when i test in edit mode but then when i publish it, it dosnt work. I don't see whats wrong. please help. thanks

bin = script.Parent
halt = false

function onButton1Down(mouse)
    local hit = mouse.Target

    if (hit == nil) or (halt == true) then return end
    halt = true
    mouse.Icon = "rbxasset://textures\\GunWaitCursor.png"
    bin.Ping:play()

    if (hit.Name == "Rock") then
                while hit.Transparency <= 1 do
                hit.Transparency = hit.Transparency + 0.2
                wait(0.7)
                end

            wait(0.7)
            hit.Parent = nil
    end

    if (hit.Name == "Dirt") then
                while hit.Transparency <= 1 do
                hit.Transparency = hit.Transparency + 0.2
                wait(0.10)
                end

            wait(0.10)
            hit.Parent = nil
    end

    if (hit.Name == "LooseRock") then
                while hit.Transparency <= 1 do
                hit.Transparency = hit.Transparency + 0.2
                wait(0.30)
                end

            wait(0.50)
            hit.Parent = nil
    end

    wait(0.10)
    halt = false
    mouse.Icon = "rbxasset://textures\\GunCursor.png"
end


function onSelected(mouse)
    --print("Action Tool Selected")
    mouse.Icon = "rbxasset://textures\\GunCursor.png"
    mouse.Button1Down:connect(function() onButton1Down(mouse) end)
end

bin.Selected:connect(onSelected)