How can I make the classic timebomb script make the parts it hits unanchored?

I've figured out a way to make the classic rocket launcher make the parts it hits anchored by adding these two parts into the script:

function unanchor(part)

if part ~= nil then

    part.Anchored = false

end

end

explosion.Hit:connect(unanchor)

I've tried to put these parts into the timebomb script multiple times, could someone please help me or give me a better method???