How can I move a "piece" of terrain or specify where to generate it?

I have a script which generates terrain, but it doesn’t generate it where it’s supposed to. I want to generate the code at a specific place or move the terrain after it’s been generated.

This is the code that generates the terrain:
game.Workspace.Terrain:FillBlock(CFrame.new(Vector3.new((x*5), yPos + height, (z*5))), Vector3.new(5, (height * 1.2), 5), partMaterial)

Replying to boost this topic since it’s been 1 hour.