Opposite of Terrain:FillBlock?

[Emskipo]

1. What do you want to achieve?
   I’m trying to use parts to construct pathways from terrain. In other words I’m creating pathways with parts then using script to create the terrain from the parts via functions like Terrain:FillBlock(). This works except when dealing with pathways that go underground.

2. What is the issue?
   The is issue is that I can’t seem to find a way to do the opposite of FillBlock(). I want to “EmptyBlock()”. Basically so that any parts I have intersecting with terrain will hollow out the terrain instead of filling it.

3. What solutions have you tried so far?
   I have done some searching but I can’t seem to find anything except for using the region, erode or subtract terrain tools. Erode and subtract aren’t accurate enough and the region tool can’t be rotated before terrain selection and it can’t be rotated at anything other than 90 degrees.

[TheCarbyneUniverse (Carbyne)]

I am pretty sure you are able to use FillBlock() but with air. This way you can subtract regions.

[Emskipo]

Excellent, that works great. Ty!