How to use MoveTo correctly

Help
1

Hello everyone .... I speak Spanish, it is my first topic, I hope I do not make mistakes, if so, let me know ... thank you.

What I want is to move an object from one point to another, and I got a simple script for that.

local ROOT = script.parent


local Time = script:GetCustomProperty("Time") -- I have created a Float
local Pos1 = script:GetCustomProperty("Pos1") -- I have created a Vector 3
local Rot = script:GetCustomProperty("Rot")  -- I have created a Rotation
local RotMulti = script:GetCustomProperty("RotMulti") -- I have created a Float


if (RotMulti > 0) then
	ROOT:RotateContinuous(Rot, RotMulti)
end

local DELAY = script:GetCustomProperty("Delay") -- I have created a Float

local movementProgress = 0
local delayProgress = 0
local movingToOffset = true

local startPos = ROOT:GetWorldPosition()

function Tick(dt)
	ROOT:MoveTo(startPos + Pos1, Time)
	Task.Wait(Time + DELAY)
	ROOT:MoveTo(startPos, Time)
	Task.Wait(Time + DELAY)
end

With this everything works wonderfully. The problem is when I want to add another move point.

I would like from the startPos to go Pos1 - Pos2 - Pos1 - startPos

I tried:

local ROOT = script.parent


local Time = script:GetCustomProperty("Time") -- I have created a Float
local Pos1 = script:GetCustomProperty("Pos1") -- I have created a Vector 3

local Pos2 = script:GetCustomProperty("Pos2") -- ( ADDED ) a Vector 3

local Rot = script:GetCustomProperty("Rot")  -- I have created a Rotation
local RotMulti = script:GetCustomProperty("RotMulti") -- I have created a Float


if (RotMulti > 0) then
	ROOT:RotateContinuous(Rot, RotMulti)
end

local DELAY = script:GetCustomProperty("Delay") -- I have created a Float

local movementProgress = 0
local delayProgress = 0
local movingToOffset = true

local startPos = ROOT:GetWorldPosition()

function Tick(dt)
	ROOT:MoveTo(startPos + Pos1, Time)
	Task.Wait(Time + DELAY)
	ROOT:MoveTo(startPos  + Pos1  + Pos2, Time) -- (ADDED)
	Task.Wait(Time + DELAY)
        ROOT:MoveTo(startPos  + Pos1, Time) -- (ADDED)
	Task.Wait(Time + DELAY)
        ROOT:MoveTo(startPos, Time)
	Task.Wait(Time + DELAY)
end

The movements are made but the same error always comes out:

Function called with incorrect number or type of parameters. Check your parameters for any unexpected nil values or values that are not the type you expect them to be.

I have also tried:
ROOT:MoveTo(Pos1 + Pos2, Time)
ROOT:MoveTo(Pos2, Time)

I always get an error on the same line, second movement.

From already thank you very much and I hope some help !!