Union Door Placement not working

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#1

Hello, I am having an issue in which this door placement code does not negate the wall.

Here is the remote event in which is meant to place the door.

    local object = model:Clone()
	object:PivotTo(cframe)
	object.Parent = workspace
	
	local partNegative = object:FindFirstChild("Negative")
	partNegative.Transparency = 1
	local tag = "Builder_Wall"
	
	for i,v:BasePart in pairs(workspace:GetPartsInPart(partNegative)) do
		if v:FindFirstChild(tag) then
			local negativeClone = partNegative:Clone()
			negativeClone.Parent = workspace
			v:SubtractAsync({negativeClone})
		end
	end

All help is appreciated.