Problems with kills in Linked Sword [Editing]?

I am editing a Linked Sword, and the sword works except it does not give kills. [which is why I am editing it, I can get it to give kills but it gives way more than just 1 kill, it could even give me more provided I want to stand there stabbing a dead body]

function blow(hit)
    if (hit.Parent == nil) then return end -- happens when bullet hits sword
    local humanoid = hit.Parent:findFirstChild("Humanoid")
    local vCharacter = Tool.Parent
    local vPlayer = game.Players:playerFromCharacter(vCharacter)
    local hum = vCharacter:findFirstChild("Humanoid") -- non-nil if tool held by a character
    if humanoid~=nil and humanoid ~= hum and hum ~= nil then
        -- final check, make sure sword is in-hand

        local right_arm = vCharacter:FindFirstChild("Right Arm")
        if (right_arm ~= nil) then
            local joint = right_arm:FindFirstChild("RightGrip")
            if (joint ~= nil and (joint.Part0 == sword or joint.Part1 == sword)) then
                tagHumanoid(humanoid, vPlayer)
                humanoid:TakeDamage(damage)
                local k = vPlayer.leaderstats.Kills
                local bool = false
                if humanoid.Died then
                    bool = true
                    if bool == true then
                        bool = false
                        k.Value = k.Value + 1