I have this script with an idleanim and walkanim i add a jumpanim but it didnt work how do i fix it?

local character = script.Parent
local humanoid = character:WaitForChild("Humanoid")

local walkAnim = script:WaitForChild("Walk")
local walkAnimTrack = humanoid.Animator:LoadAnimation(walkAnim)

local idleAnim = script:WaitForChild("Idle")
local idleAnimTrack = humanoid.Animator:LoadAnimation(idleAnim)

local jumpAnim = script:WaitForChild("Jump")
local jumpAnimTrack = humanoid.Animator:LoadAnimation(idleAnim)
humanoid.Running:Connect(function(speed)
    if speed > 0 then
        if not walkAnimTrack.IsPlaying then
            walkAnimTrack:Play()
        end
    else
        if walkAnimTrack.IsPlaying then
            walkAnimTrack:Stop()
        end
    end
end)

humanoid.Running:Connect(function(speed)
    if speed > 0 then
        if idleAnimTrack.IsPlaying then
            idleAnimTrack:Stop()
        end
    else
        if not idleAnimTrack.IsPlaying then
            idleAnimTrack:Play()
        end
    end
end)

humanoid.Running:Connect(function(speed)
    if speed > 0 then
        if not jumpAnimTrack.IsPlaying then
            jumpAnimTrack:Play()
        end
    else
        if jumpAnimTrack.IsPlaying then
            jumpAnimTrack:Stop()
        end
    end
end)