Texture not showing when using Instance.new('Decal')?

Im making a spam decal thingy in Studio, however the decals don't show anything.

Here is the code i wrote (Not the best, but its how i roll):

local decals
				
local success, eMes = pcall(function()
	for i, part in pairs(workspace:GetChildren()) do
		if part.ClassName == 'Part' or part.ClassName == 'UnionOperation' then
			decals = {
						Instance.new('Decal', part),
						Instance.new('Decal', part),
						Instance.new('Decal', part),
						Instance.new('Decal', part),
						Instance.new('Decal', part),
						Instance.new('Decal', part)
					}
								
			for i, decal in pairs(decals) do decal.Texture = 'http://www.roblox.com/asset/?id='..split[3] end
								
			decals[1].Face = Enum.NormalId.Top
			decals[2].Face = Enum.NormalId.Bottom
			decals[3].Face = Enum.NormalId.Front
			decals[4].Face = Enum.NormalId.Right
			decals[5].Face = Enum.NormalId.Back
			decals[6].Face = Enum.NormalId.Left
								
		end
	end
end)

if success then
	print('Admin command successfully initiated!')				
else
	return eMes
end

Context: split[3] is the id of the texture.

Nothing is being shown. Plz help me, i don't know what could be going on.