The npc Ai always spam the scream sound when a player is near him?

i want to make the monster scream when a player is near but it just screams constantly

local rootPart = script.Parent.Torso

local human = script.Parent.Ashersing



function findtarget()

local dist = 100

local target = nil

for i,v in pairs(workspace:GetChildren()) do

local humanoid = v:FindFirstChild("Humanoid")

local head = v:FindFirstChild("Head")

if humanoid and head and v.Name ~= "Ashersing" then

if (head.Position - rootPart.Position).Magnitude < dist and humanoid.Health > 0 then

dist = (head.Position - rootPart.Position).magnitude

target = head

script.Parent.Head.scream:Play()

end

end

end

return target

end



while wait(1) do

local head = findtarget()

if head then

local ray = Ray.new(rootPart.Position, head.Position - rootPart.Position)

local hit,position = workspace:FindPartOnRayWithIgnoreList(ray,{script.Parent})

if hit then

if hit.Parent:IsDescendantOf(head.Parent)then

human:MoveTo(head.Position)

else

path = game:GetService("PathfindingService"):FindPathAsync(rootPart.Position,head.Position)

points = path:GetWaypoints()

if path.Status == Enum.PathStatus.Success then

for i,v in pairs(points) do

human:MoveTo(v.Position)

human.MoveToFinished:wait(2)

if v.Action == Enum.PathWaypointAction.Jump then

human.Jump = true

end

if (points[#points].Position - head.Position).magnitude > 15 then

break

end

end

else

human:MoveTo(head.Position)

end

end

end

end

end