Help with hat removing?

I want when I touch this part, all hats in my character get removed.

Part = script.Parent

Part.Touched:connect(function(hit)

	for i,v in pairs(hit.Parent:GetChildren()) do
		v.Transparency = 1
		if v:IsA("Hat") then 
			v:remove()
		
		end
	end	
end)

First of all, the remove method is deprecated, you should be using destroy instead. Now, as to why this isn't working, you're attempting to set the Transparency property of all children of the character. Not all children of the character have a Transparency property, so you'll get an error when trying to set the property on a child that doesn't have it.

Here's a more robust version, tested and it's working:

script.Parent.Touched:connect(function(hit)
	-- Verify the thing that touched the part is actually a player
	if hit.Parent:FindFirstChild("Humanoid") then
		for i, v in pairs(hit.Parent:GetChildren()) do
			if v:IsA("Hat") then
				v:Destroy();
			end
		end
	end
end)