Can someone help me troubleshoot?

So here is the code

script.Parent.Equipped:connect(function(mouse)
    mouse.KeyDown:connect(function(key)
        debounce=false
        if key=="f" then
            if debounce==false then
                debounce=true
                print("Keydowned")
                local char=script.Parent.Parent
                local plr=game.Players:GetPlayerFromCharacter(char)
                script.Parent.GripUp=Vector3.new(-1, 5, -0)
            a=Instance.new("Part")
            a.Parent=game.Workspace
            b=Instance.new("PointLight")
            b.Parent=a
            b.Range=20
            if plr.TeamColor==BrickColor.new("Bright yellow") then
            b.Color=Color3.new(255/255, 239/255, 5/255)
            elseif plr.TeamColor==BrickColor.new("Dark green") then
                b.Color=Color3.new(25/255, 144/255, 17/255)
            end
            a.CanCollide=false
            a.Transparency=.4
            a.BrickColor=BrickColor.new("Bright yellow")
            a.Shape="Ball"
            a.Size=Vector3.new(.5,.5,.5)
            a.Position=script.Parent.Gun.Position
            a.Velocity=script.Parent.Parent.Head.CFrame.lookVector*math.random(300,500)
            script.Parent.GripUp=Vector3.new(-1, 0.01, -0)
        --add playercheck
        --add movement-Check
        --add color depending on team
        --kthx

            debounce2=false
            a.Touched:connect(function(hit)
                if hit.Name==script.Parent.Parent.Parent.Name then
                if debounce2==false then
                    debounce2=true
                if hit.ClassName=="Hat" then
                debounce=false
                elseif hit.Parent:FindFirstChild("Humanoid") then
                    hit.Parent.Humanoid:TakeDamage(100)
                    wait(2)
                    debounce=false
                else
                    wait(2)
            debounce=false
                    end
                end
                end

            end)

            end
        end
    end)

end)

Basically when you press f (Line 4), it shoots a little ball. The problem is, it works in Test mode, but not in game. This is the first time I have dealt with Tools, so there may be something I have not done.

I equipped the tool, and pressed f, it did not print.

There is no output, or anything.