I've made a medkit script but its not working, any ideas?

I have made a script inside a medkit, but the medkit script is not working, here is the script:

local tool = script.Parent

tool.Activated:Connect(function() local humanoid = tool.Parent:FindFirstChild("Humanoid") humanoid.Health = humanoid.Health + 100 end)

Any ideas how to fix?

Woah you forgot to put which item gives health I think .