Instance not being created?

I have this simple black hole script that'll pull any brick in the PartStorage called "Rainbow Brick" towards it only if the Y value of it's position is less than 19.5. The output gives no error but each part called RainbowBrick doesn't have a BodyPosition child. Can anyone help me spot the problem?

local hole = script.Parent
local child = {}
for _, v in pairs(workspace.PartStorage:GetChildren()) do
    if v.Name == 'Rainbow Brick' then
        table.insert(child, v)
    end
end

for _, v in pairs(child) do
    if v.Anchored==false and v.Position.Y<=19.5 then
local relPos = hole.Position - child.Position
	local motivator = child:FindFirstChild("BlackHole Influence")
	if relPos.magnitude<=25 then
		if motivator == nil then
			motivator = Instance.new("BodyPosition")
			motivator.Parent = child
			motivator.Name = "BlackHole Influence"
		end
		motivator.position = hole.Position
		motivator.maxForce = 500
	end
    end
end

Thanks in advance

local hole = script.Parent

local child = {}

for _, v in pairs(workspace.PartStorage:GetChildren()) do

    if v.Name == 'Rainbow Brick' then
         force=Instance.new("Body position",v) -- This help? Sorry I'm on my pad so this is a little hard.
force.Name="BlackHole Influence"
        table.insert(child, v)

    end

end

 

for _, v in pairs(child) do

    if v.Anchored==false and v.Position.Y<=19.5 then

local relPos = hole.Position - child.Position

    local motivator = child:FindFirstChild("BlackHole Influence")

    if relPos.magnitude<=25 then

        if motivator == nil then

            motivator = Instance.new("BodyPosition")

            motivator.Parent = child

            motivator.Name = "BlackHole Influence"

        end

        motivator.position = hole.Position

        motivator.maxForce = 500

    end

    end

end