How i put equip animation on a tool?

I have my custom animation but, i can't run it. I tried so many scripts but I do not see results, my goal is that when I click on the box where the tool is shown, the animation runs and it continue with the idle animation.

Edit 1: sorry for my bad english, i am from the moon.

you could do this

local animplay -- makes it nil and u can call it in more functions
tool.Equipped:Connect(function()
	animplay = humanoid:LoadAnimation(animation)
	animplay:Play() -- idle animations should be looped
end)
tool.UnEquipped:Connect(function()
	if animplay ~= nil then -- if its not blank or nil
		animplay:Stop()
	end
end)

pretty self explanatory. you should make sure the animation is looped and set to one of the higher priorities. NOTE: you should really define animation and humanoid; this isn't a complete script just a demonstration

Ok, so first, you need to try to find a way to get the player, and if this is a normal tool in the starter pack or a tool that will get cloned into the player's backpack sometime soon, then the variable

local player = script.Parent.Parent.Parent

would work.

And now we need to get our player's character

local player = script.Parent.Parent.Parent
local character = player.Character or player.CharacterAdded:Wait()

and now we need to get our tool, and the animationObject

local player = script.Parent.Parent.Parent
local character = player.Character or player.CharacterAdded:Wait()
local tool = script.Parent
local animation = pathToAnimation --Animation
local animationTrack --We'll give this a value later

And you need to be fimiliar with the Equipped event.

local player = script.Parent.Parent.Parent --Gets the player if this is a regular tool in starterpack
local character = player.Character or player.CharacterAdded:Wait()
local tool = script.Parent
local animation = pathToAnimation --Animation
local animationTrack --We'll give this a value later

tool.Equipped:Connect(function()
	--Empty
end)

So now, we need to go to the Humanoid and load the animation with Humanoid:LoadAnimation.

And your final product should look like this:

local player = script.Parent.Parent.Parent --Gets the player if this is a regular tool in starterpack
local character = player.Character or player.CharacterAdded:Wait()
local tool = script.Parent
local animation = pathToAnimation --Animation
local animationTrack --We'll give this a value later

tool.Equipped:Connect(function()
	animationTrack = character:WaitForChild("Humanoid"):LoadAnimation(animation)
	animationTrack:Play()
end)