How to make a healing tool heal on touch?

So, I have been trying to add a medic class into my roblox game. I decided that it would need a tool that would be able to heal teammates. I made the tool, (the entire tool is all in the part "Handle"). I put this script into my tool hoping it would make the tool heal any humanoid that touched the part. Here is the script:

local debounce = false
game.Players.LocalPlayer.Backpack.Healing.Handle.Touched:Connect(function(hit)
    if hit.Parent:FindFirstChild("Humanoid") then
        if not debounce then
            debounce = true
                while hit.Parent.Humanoid.Health <100 do
                    hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Heath + 25
                    wait(5)
                end
                wait(5)
                debounce=false
        end
    end
end)

Personally, I am a new scripter and I think the proble may be about how I defined the tool. It all seemed right though.

The tool is called: Healing. The handle is called: Handle

Please tell me how to fix this code, Thanks!