Dissapearing Part

local MainPart = script.parent
local TCheck = false

local function diss()
    if TCheck = false then
        TCheck = true

    for num = 1, 10 do
        MainPart.Transparency = num / 10
        wait(.1)
    end

    MainPart.CanCollide = false
    wait(3)
    MainPart.Cancollide = true
    MainPart.Transparency = 0
    TCheck = false

    end
end

MainPart.Touched:Connect(diss)