only 1 arm animates when play an animation (answered) ?

I'm making a c4 that when you explode it an animation plays but only the 1 arm animates and the 1 with the tool in his hand dont

here is my code

local c4 = script.Parent:WaitForChild("creator").Value.Character.C43

c4.Activated:Connect(function()

local hum = c4.Parent:WaitForChild("Humanoid")
local anim = hum:LoadAnimation(script:FindFirstChildOfClass("Animation"))
anim.Looped = false
anim:Play()

the tools are un-anchored and Can-Collide is false

it's very easy, just when you are making you're animation and using the "animation editor" just where it says "view" at the top of the editor window click it then click "Set Priority" then click "Action" or what your animation is like mine is an action