Tool grip animation does not function?

I have a tool and when a player presses a button the tool will change it's position, but the tool will only move in one direction and will not head back to it's original spot.

Function moves tool to it's new spot and records the positions in two arrays

local gripPosArray = {}
local gripRightArray = {}

function scopeAnimationTo()
    for i = 1, 20 do
        wait()
        script.Parent.GripPos = script.Parent.GripPos + Vector3.new(0,0,-.025)
        table.insert(gripPosArray,i,script.Parent.GripPos)
        script.Parent.GripRight = script.Parent.GripRight + Vector3.new(0,0,-.1)
        table.insert(gripRightArray,i,script.Parent.GripRight)
    end
    print(script.Parent.GripPos)
end

Function moves the tool back to origin using the array positions

function scopeAnimationFrom()
    for i = 1, 20 do
        wait()
        script.Parent.GripPos = gripPosArray[20-i]
        print(script.Parent.GripPos)
        script.Parent.GripRight = gripRightArray[20-i]
    end
    print(script.Parent.GripPos)
end