how to make a local script work in game, outside of studio?

i made a idle animation for a tool and when i use it in studio it works. but when i use it ingame, it doesnt work at all i dont know at all what to do it get it to work, like if i need to do some extra coding or if the problem lies within the code itself. im fairly new to this in general so i have no idea

the code i use for it, not sure if i need to add anything else for it to show in game. if i need to do extra coding outside of the tool, how do i do that?

script.Parent.Equipped:connect(function()

local idle = script.Parent.Parent.Humanoid:LoadAnimation(script.Idle)

idle.Priority = Enum.AnimationPriority.Action

idle:Play()

  

script.Parent.Unequipped:connect(function()

idle:stop()

end)

end)