script to only run when a player has a certain gear is not working

[warm void]

I am trying to make a script run only when a player has a certain gear but it isnt working. It works without the testing for gear part. Anybody have a solution?
heres the script I tried

local Tool = player.Backpack:FindFirstChild("Card")

if Tool then
--script here
end

[winged kayak]

is it running no matter what or not at all?