Mouse Part Needs to be in the List of Drag Parts When I Call the MouseDown Function?

Hi,

I am creating a drag tool to drag a bunch of parts at the same time using the Dragger object. This is my code:

--local dragger= Instance.new("Dragger",game.Players.LocalPlayer.PlayerGui)
local dragger= Instance.new("Dragger")

tool= script.Parent
local Plr= game.Players.LocalPlayer
local Mouse= Plr:GetMouse()
local Char = Plr.Character or Plr.CharacterAdded:wait()
while game.Players.LocalPlayer.Character.Parent == nil do
    game.Players.LocalPlayer.Character.AncestryChanged:wait()
end

local mouseDown= false

tool.Equipped:connect(function()--tool.Equipped
    dragger= Instance.new("Dragger")
    mouseDown= true
    example= script.Parent:FindFirstChildWhichIsA("Model"):Clone()
    example.Parent= game.Workspace
    example:MoveTo(Vector3.new(Mouse.Hit.X,Mouse.Hit.Y,Mouse.Hit.Z))

    local list= {}
    for index,descendant in pairs(script.Parent:FindFirstChildWhichIsA("Model"):GetDescendants()) do
        if descendant:IsA("Part") then
            table.insert(list,descendant)
        end
    end 
    --]]
    --local list= example:GetChildren()

    dragger:MouseDown(example.PrimaryPart,example.PrimaryPart.Position-Mouse.Hit.p,list)    

    Mouse.Move:connect(function()
        if mouseDown== true then

            dragger:MouseMove(Mouse.UnitRay)
        end
    end)
end)

tool.Activated:connect(function()
    --
end)

tool.Unequipped:connect(function()--tool.Unequipped
    if mouseDown== true then    
        mouseDown= false
        dragger:MouseUp()
        example:Destroy()
    end
end)

tool.Deactivated:connect(function()

end)

I think it's a formatting or syntax issue and I tried to add braces around {list} but this is a bizarre error, and it spawned a different error when I attempted it. The name of the original error I'm currently working with is in the Title. I could try reformatting making the table, such as:

    local list = example:GetDescendants()
    for i=1,#list do
        if not list[i]:IsA('Part') then
            table.remove(list,i)
        end
    end 

So what this does is that it gets all the parts in the model called 'example.' It does not discriminate between which are actually parts and which are objects such as scripts or seats. Next, I make a for loop to go through the list and delete entries for objects that are not parts; finally this list is added in a line of code below it. Oh and by the way, the error is in the line with dragger:MouseDown(example.PrimaryPart,example.PrimaryPart.Position-Mouse.Hit.p,list)

Thanks,

Houlardy

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