Help with Normal Id?

I've been trying to get the front surface of a part named "Sidewalk" using normal id but it won't work,am I doing it wrong?

How can I get the front surface of the part named sidewalk?

Front = (Vector3.FromNormalId(Enum.NormalId.Front))
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Sidewalk = Instance.new("Part",workspace)
Sidewalk.Size = Vector3.new(4, 1, 37)
Sidewalk.Position  = Vector3.new(4, 1, 37)
Sidewalk.Name = "Sidewalk"
Sidewalk.Anchored = true
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FrontPosition = Sidewalk.Position*Front
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Point = Instance.new("Part",workspace)
Point.Position = FrontPosition
Point.Name = "Point"
Point.Anchored = true
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print(FrontPosition)